Database Develop

[Q] PC not recognizing USB?

Anyone else having problems with your PC not recognizing the phone? Even after selecting mass storage in the usb settings, when i plug the phone in to the PC the little usb notification in the notification isn't showing up.

donwonlee said:
Anyone else having problems with your PC not recognizing the phone? Even after selecting mass storage in the usb settings, when i plug the phone in to the PC the little usb notification in the notification isn't showing up.
Click to expand...
Click to collapse
Have you installed the Samsung drivers?

yeah i've tried installing the drivers. the phone isn't even putting the usb icon in the notification tray anymore. just starts charging and that's it. i go to usb settings/mass storage and nothing. any ideas?

I got that too, I just put the usb cable in another usb port on my computer and tadaaaa: problem fixed

I had this issue and read in a forum (not sure where wish I did to give credit) where u need to format your internal SD memory (the built in 16 gig SD) I did that and it started to work again.
Sent from my SAMSUNG-SGH-I897 using XDA App

donwonlee said:
Anyone else having problems with your PC not recognizing the phone? Even after selecting mass storage in the usb settings, when i plug the phone in to the PC the little usb notification in the notification isn't showing up.
Click to expand...
Click to collapse
How about Menu > settings > applications > usb settings > ask on connection.....

Palmetto_X said:
How about Menu > settings > applications > usb settings > ask on connection.....
Click to expand...
Click to collapse
I had/have this problem sometimes too. choosing "ask on connection" usually works. I find that if you select anything other than "mass storage" then exit out, then go back in and choose mass storage, it works again.
Usually only have to do it once after a factory reset or on a new phone

I find my connection to be hit or miss. The pc picks up the drivers fine but doesn't mount the phone as a drive. Kies is a pain to get going too. I read on here that you need .net framework 4 and also no file names over 16 characters, and without kies I think you need to be in debug mode on application settings. I still need to try the short file names and see if it improve it but I never really hook up to a pc anyway, my father has win 7 and I have kies on his computer. I have linux mint 9 on my own so I rarely get to fitz with it on a windows machine.
Sent from my SAMSUNG-SGH-I897 using Tapatalk

I'm having this problem, can't get usb debugging mode to turn off. It immediately turns on when I turn it off. It's as the just says, "yeah, you can uncheck it, but I'm gonna leave it on."

[Q] My N1 Would not Prompt to Mount SD Memory When I connect it to my PC

I needed to transfer some files from my N1 to my Pc, so I connected it to my PC using the cable. I was expecting the black mounting screen prompting me to mount the SD card, but nothing happened. I restarted my device twice, but the case is still the same. What could have been wrong? I have not installed any app within this time, not removed any. I have used it in just ordinary daily manner, messaging and calling and nothing else. My N1 runs on Froyo, OTA. No jailbreak.
Please help. Thank you

u need to assign a drive letter to your SD card

Noob answer: is it on the status pulldown bar?

Do you have USB Debugging enabled?

Does the phone recognise that it's been plugged in (ie start charging)?

Similar problem
I am having a similar problem with my N1 running CM6 stable. When I turn off USB debugging and plug the phone into my Win7 laptop, I get the USB connected screen, but when I turn on USB storage the SD drive doesn't mount i.e. I cannot see/access the drive in Windows 7. The N1 status bar says USB storage is on.
Under Device Manager, the N1 shows up as Android Phone-->Android ADB Interface with driver version 2.0.10.2 dated 11/08/2009.
Any help would be much appreciated.

Rusty! said:
Does the phone recognise that it's been plugged in (ie start charging)?
Click to expand...
Click to collapse
No, THIS is exactly the problem, the phone dies not recognise that it has been connected to a computer. It does start charging, but no sign of SD memory mount/unmount. Nothing. Just simply charging.

khaytsus said:
Do you have USB Debugging enabled?
Click to expand...
Click to collapse
No, USB debugging is not enabled. I double checked it.

I guess that Windows also doesn't recognize the phone as anything (Device Manager doesn't show anything new plugged in)?
In that case, enable USB Debugging, and see if the phone is recognized by Windows.
If it is - the problem is somewhere in SW.
If it isn't - then it might be a faulty USB cable or connector (from any side - phone or PC).

same thing happens to me from time to time. restart your computer and that should fix your problem.
Sent from my Nexus One using XDA App

[Q] Can't connect my Captivate through USB anymore

Hi everyone,
I'm having issues connecting my Samsung Captivate to my computer. For about a week, it worked fine, I was able to transfer files to my phone but recently I noticed that the "USB connected" notification is not showing on the phone when plugged in to the computer.
Now, when I plug in my phone to the computer it just charges but doesn't comunicate with my computer. A friend of mine bought the same phone right after I did and he gets the "USB connected" connected when he plugs in his.
I tried using his USB cable but again, the phone is not recognized by Windows nor the phone detects it is connected to the computer. I've tried installing several USB drivers that I've come across on several forums, but nothing. I even downloaded and updated Kies to the latest version, but still nothing.
My phone is unlocked and NOT rooted, and I'm using Windows 7 x64. I've set the USB Settings to Mass Storage, even to Ask on Connection, but it doesn't ask anything when I connect the phone to a USB on my computer.
Sometimes Windows knows there is a device connected but says it couldn't recognize it.
I already did a factory reset, but the issue was not solved. I've tried connecting it to other computers, but still hasn't been able to connect my phone correctly.
What could it be?
Thanks!

Hmm. You have Mass Storage selected and up-to-date USB drivers. Try selecting USB-Debugging and Stay Awake in the Development option of your phone. If that doesn't fix it, then I have a few other ideas.

Make sure the usb door is completely open, it should click into place, some users have reported this solves their usb issues.

I did what you told me, but still my phone ain't recognized by Windows nor my phone is aware that it has been conected to a computer
What other ideas do you have in mind?

catire said:
Make sure the usb door is completely open, it should click into place, some users have reported this solves their usb issues.
Click to expand...
Click to collapse
I'm sure usb door is completely opened

Have you tried using a different USB outlet on your computer? I had this same issue when I plugged my phone up using the USB outlet on the front of my computer then when I tried the one on the back of my computer it worked just fine.

Are you running a launcher app? I use launcher pro and can't connect until I change back to the default launcher with home switcher and launch it.

jgchaval said:
I did what you told me, but still my phone ain't recognized by Windows nor my phone is aware that it has been conected to a computer
What other ideas do you have in mind?
Click to expand...
Click to collapse
First off, think back. If it worked for a week and then suddenly stopped, what changed? Maybe you updated something on Windows or changed something on your phone. There's a reason it just stopped.
You can try using a free program called USBDeview.
It might do the trick for you and help you install the correct drivers. I'm thinking you no longer have them.
1. Download USBDeview (link is above)
2. Plug your phone in and open the program. Find all the HTC drivers-delete them
3. Unplug your phone and plug it back in
4. The correct drivers should install automatically
You can also try updating the drivers manually.
Galaxy S drivers (These are for ADB, but will work fine)
1. Click the Start Menu on your computer and right click "Computer"
2. Choose "Manage" --> it will ask you to continue --> "Device Manager"
3. Plug you phone in and look for it to pop up, probably under Portable Devices
4. Right click --> "Properties" --> "Update Driver" --> "Browse" --> "Let Me Pick" --> and navigate to the location you extracted the drivers to.
This is most likely a driver issue. I doubt your phone is messed up. You'll get it eventually. I also had a hard time getting my Captivate to connect. After uninstalling and reinstalling my drivers (more than once) it finally worked. One last thing, for now. When you uninstall drivers, also make sure you don't have any installed under your program list. As in, Control Panel --> Uninstall a program. Good luck!

climber1872000 said:
Have you tried using a different USB outlet on your computer? I had this same issue when I plugged my phone up using the USB outlet on the front of my computer then when I tried the one on the back of my computer it worked just fine.
Click to expand...
Click to collapse
A friend of mine, who bought the same phone on the same day as I did, plugged in his phone on my computer using my cable to the same port my phone was connected, and he did get the "USB Connected" notification on his phone
govgeek said:
Are you running a launcher app? I use launcher pro and can't connect until I change back to the default launcher with home switcher and launch it.
Click to expand...
Click to collapse
No, i'm using the default launcher that comes with the Captivate

jgchaval said:
Hi everyone,
I'm having issues connecting my Samsung Captivate to my computer. For about a week, it worked fine, I was able to transfer files to my phone but recently I noticed that the "USB connected" notification is not showing on the phone when plugged in to the computer.
Now, when I plug in my phone to the computer it just charges but doesn't comunicate with my computer. A friend of mine bought the same phone right after I did and he gets the "USB connected" connected when he plugs in his.
I tried using his USB cable but again, the phone is not recognized by Windows nor the phone detects it is connected to the computer. I've tried installing several USB drivers that I've come across on several forums, but nothing. I even downloaded and updated Kies to the latest version, but still nothing.
My phone is unlocked and NOT rooted, and I'm using Windows 7 x64. I've set the USB Settings to Mass Storage, even to Ask on Connection, but it doesn't ask anything when I connect the phone to a USB on my computer.
Sometimes Windows knows there is a device connected but says it couldn't recognize it.
I already did a factory reset, but the issue was not solved. I've tried connecting it to other computers, but still hasn't been able to connect my phone correctly.
What could it be?
Thanks!
Click to expand...
Click to collapse
I just did the new AT&T update and mine is now having this problem. I have to manually go into manage applications > usb settings > mass storage to get it to work now

a.n said:
First off, think back. If it worked for a week and then suddenly stopped, what changed? Maybe you updated something on Windows or changed something on your phone. There's a reason it just stopped.
You can try using a free program called USBDeview.
It might do the trick for you and help you install the correct drivers. I'm thinking you no longer have them.
1. Download USBDeview (link is above)
2. Plug your phone in and open the program. Find all the HTC drivers-delete them
3. Unplug your phone and plug it back in
4. The correct drivers should install automatically
You can also try updating the drivers manually.
Galaxy S drivers (These are for ADB, but will work fine)
1. Click the Start Menu on your computer and right click "Computer"
2. Choose "Manage" --> it will ask you to continue --> "Device Manager"
3. Plug you phone in and look for it to pop up, probably under Portable Devices
4. Right click --> "Properties" --> "Update Driver" --> "Browse" --> "Let Me Pick" --> and navigate to the location you extracted the drivers to.
This is most likely a driver issue. I doubt your phone is messed up. You'll get it eventually. I also had a hard time getting my Captivate to connect. After uninstalling and reinstalling my drivers (more than once) it finally worked. One last thing, for now. When you uninstall drivers, also make sure you don't have any installed under your program list. As in, Control Panel --> Uninstall a program. Good luck!
Click to expand...
Click to collapse
I did all that yesterday, but the device ain't listed in the USBDeview nor it shows up in the Device Manager

did you finally fix this problem? because I'm having the same issue here

Same here. It was working fine, I could connect to Kies, transfer music in Media mode and see both sd drives in Mass Storage mode. Then I rooted today and now I get nothing. In anything but Kies mode I get the Windows Bong of Recognition, but still not visible in Explorer. Also, my Home screen stays active instead of switching to the USB animation like it did before. I know this can't be a consequence of rooting the phone, can it?
EDIT: More weirdness, with the phone connected in Mass Storage mode if I look at My Computer in Explorer there are 2 extra drives showing, but they are greyed out and when I click on either of them it asks me to insert a card as the drive is empty. WTF???

UPDATE: I unrooted and managed to get my USB connection back to working. It is still a bit flaky as I sometimes have to disconnect/reconnect several times before it works, but at least it now works although it sometimes loses sync in the middle of transferring a file. Can't imagine why simply rooting the phone would cause the loss of USB connectivity. I am going to reroot and see if it occurs again.

OK, a rerooted the phone and this problem is now back. I have no problem connecting while in debugging mode. I installed OCD (non-Market apps mod) and when I turn off debugging and connect I get the Windows bong and see the USB icon in the Notification bar, but the MTP screen never comes up and I can't see the phone in Explorer (Mass Storage mode) or in WMP (Media mode). Kies can;t see it in that mode, either. I really don't want to have to unroot every time I want to look at the phone contents. Any ideas? PLEASE!

I'm having a similar problem - I installed the Perception ROM and immediately afterwards I can't see the USB connection at all from my PC or my Mac. The USB icon on the phone does not come up either.
I'm trying to get my hands on a different cable - but the weird thing is when I plug the USB into my computer the phone starts charging for like half a second and then stops.
This is really annoying. I tried changing the rom to Cognition 3.02 but that didn't change anything.

There are a few topics on this here on the forum - I would recommend the following:
How are you rooting your phones? Nobody has said exactly how they are doing this. Are you using recommended rooting methods? Or are you using some app found on the market?
Make sure you have USB De-Bugging is turned on.
Make sure you have it listed as ask on connection.
For those who can see the drives in Windows...
Plug in your phone and then pull down your notification bar and click on the USB connected message. It will give you an option there to mount your SDCard(s) to Windows allowing you to transfer files.
Kies is junk - I'd recommend uninstalling it as it seems to cause more issues then it solves.
Use the drivers I have posted in the Q&A section (these are the ones that are linked in Design Gears Odin 1 Click Back to Stock post btw) - but I would try and COMPLETELY removing the pre-existing drivers before installing the new ones.
Make sure the USB Cable is plugged into the back USB port that is directly on your motherboard - this will ensure it's not a computer/hardware related issue.
I know of one user who had to go through his computer and manually remove all remnants of other drivers. I have my phone connected to both a Windows XP 32bit and a Windows 764bit systems and have been lucky to not have any USB issues.
If none of that works - I'd suggest taking it to your nearest AT&T/Rodgers shop and see if they can get the phone to connect (make sure it's back to stock!). If not they should warranty replace the device.

avgjoegeek said:
There are a few topics on this here on the forum - I would recommend the following:
How are you rooting your phones? Nobody has said exactly how they are doing this. Are you using recommended rooting methods? Or are you using some app found on the market?
Make sure you have USB De-Bugging is turned on.
Make sure you have it listed as ask on connection.
For those who can see the drives in Windows...
Plug in your phone and then pull down your notification bar and click on the USB connected message. It will give you an option there to mount your SDCard(s) to Windows allowing you to transfer files.
Kies is junk - I'd recommend uninstalling it as it seems to cause more issues then it solves.
Use the drivers I have posted in the Q&A section (these are the ones that are linked in Design Gears Odin 1 Click Back to Stock post btw) - but I would try and COMPLETELY removing the pre-existing drivers before installing the new ones.
Make sure the USB Cable is plugged into the back USB port that is directly on your motherboard - this will ensure it's not a computer/hardware related issue.
I know of one user who had to go through his computer and manually remove all remnants of other drivers. I have my phone connected to both a Windows XP 32bit and a Windows 764bit systems and have been lucky to not have any USB issues.
If none of that works - I'd suggest taking it to your nearest AT&T/Rodgers shop and see if they can get the phone to connect (make sure it's back to stock!). If not they should warranty replace the device.
Click to expand...
Click to collapse
This isn't my first rodeo... But to answer your questions:
I used the rooting method posted in XDA forums - the one-click rooting.
I've used the drivers included in the xda-forum. Not the kies software.
The only thing that changed was the loading of a new custom rom. The cable works (confirmed on my friend's phone). I can't get odin to restore back to stock because I can't get the computer to recognize the phone in either normal or in download mode. I've restored to stock using the jh7 in the stickied q&a thread
I don't think it's a hardware issue either - I think it's software-based. I'm going to try to take it to an at&t store today at lunch to see what they say.

I also have that problem only I noticed it when I cleared the dalvik cache. It messed up the auto rotate so it was always sideways and now I have no connectivity to the PC. Let me know how ATT treats you.

greeto4 said:
I also have that problem only I noticed it when I cleared the dalvik cache. It messed up the auto rotate so it was always sideways and now I have no connectivity to the PC. Let me know how ATT treats you.
Click to expand...
Click to collapse
What rom are you on

[Q] Yet another no pc connectivity problem

Hello,
I know that there are countless other threads about this issue all over the Internet, but many of them are from a year ago and none of them have helped me yet.
I've installed every driver recommended from these threads, I've restarted my phone, my computer(s), tried a different cable, USB Debugging on and off, reformatted the internal SD card, and still no luck. Kies doesn't recognize my phone. It doesn't show up in device manager or as an extra drive.
Using TW Launcher. I plug it in, select Mass Storage, hit "Connect USB Storage." It says that USB storage is in use. Yet there is no activity on my PC to indicate as such.
I can't get my Captivate to connect to a computer.
It used to connect just fine up until I upgraded to Froyo.
Is my phone a hopeless case that needs replacing, or am I missing something along the way here? I'd love to root it or at least roll back to 2.1 somehow.
Thanks so much for looking and for any help.

Reboot into download and connect to computer, see if that works.
Sent from my SGH-I897 using XDA Premium App

manske90 said:
Hello,
I know that there are countless other threads about this issue all over the Internet, but many of them are from a year ago and none of them have helped me yet.
I've installed every driver recommended from these threads, I've restarted my phone, my computer(s), tried a different cable, USB Debugging on and off, reformatted the internal SD card, and still no luck. Kies doesn't recognize my phone. It doesn't show up in device manager or as an extra drive.
Using TW Launcher. I plug it in, select Mass Storage, hit "Connect USB Storage." It says that USB storage is in use. Yet there is no activity on my PC to indicate as such.
I can't get my Captivate to connect to a computer.
It used to connect just fine up until I upgraded to Froyo.
Is my phone a hopeless case that needs replacing, or am I missing something along the way here? I'd love to root it or at least roll back to 2.1 somehow.
Thanks so much for looking and for any help.
Click to expand...
Click to collapse
I had a similar problem and it was definitely a hardware problem. At first it was recognized but then it would only charge via the pc - multiple windows 7 computers would not recognize it. However, a few times it would start installing and then say "disconnected" or something like that. One of those times that I "jiggled" the connector on the phone, it started installing the driver and I didn't touch it and it finished and worked. I disconnected and reconnected and nothing again... I got another refurb and no problems at all.

Well I'll try a few more times. Just glad the Thrill is almost out and I can enjoy that one for 10 months before something better comes along
Thanks for the help

[Q] Galaxy Note wont connect to pc

Hello forum !
i have used a couple of hours now trying to find a solution to my problem both here on the site but also on the internets.
i just recently became the happy owner of a Note, but i have been completely unable to connect it to any of my pc's ive had a galaxy i9000 that i didnt have any problems with but with my note it wont work.
under win7 64bit - when i plug the usb cable a "boc opens" in the drop down menu called MTP and when i klick that nothing happens, ive trid the varies ways of removing the sd card unmounting it etc. and debugging and so on but wont work.
it randomly connected once but then it dissapeared from my computer.
under winXP 32bit it just says usb device not recognised, i really wanna root this thing so i can play with the true power of this amazing device.
and on both pc's ive tried with kies and driver packs both together and seperately.
anyone out there that can help me out with this problem ?
cheers
and happy new year
Prosasan

Before connecting it to the PC with the cable, click "connect storage to pc" in the USB settings. After clicking it, then it will ask you to connect to pc. If you connect to pc before clicking it will not connect.
Sent from my GT-N7000 using Tapatalk

Hello i have done that but the same happens ive done it like it says i should i just dont get why my pc wont recognise it , when i press it and then it waits for me to plug it in, i do that the dialogue box shuts and then nothing happens besides windows saying unrecognised device connected

Strange, Mine connect fine just like how marinervijay mentioned. Go to Settings > Wireless> Usb Utilities and press connect first and then insert your USB, then press connect USB. Voila. There should be a window prompting to open in your windows just like when u insert a flashdrive to ur computer.

iknow its supposed to work like that.
the problem is that it doesnt work :/

Okay, have u tried resetting your Note to factory default?

no i havent tried that, because its all new it didnt work since i got it, i never thought that that might help, ill give it a go.
thx

On another, you might have a defective USB given to you by ur retailer. Perhaps you can contact them somehow and ask them to replace your USB?

do you mean the USB cable delivered with the phone ?
Cheers

Yes. Could be a defect. I'd suggest you check with your retailer if it is replaceable if none of what mentioned is working for you.

Hi,
Have you ticked USB debugging? Its under Settings>Apps>Development
Then it should show usb connection in notification tab, tap it and set usb storage as on.

There may be few problems here so I will suggest different solutions, one might work for you
1. Turn off your antivirus and connect, it should work, see after connecting mobile that does it install something near "Bottom clock"?, open "my computer" see if it gives you N7000 (give it a minute). sometimes your computer settings are a problem
2. If no, Install latest Kies on your computer as it downloads Samsung drivers for your phone
3. after connecting 1st time, computer takes some time to recognize your mobile--be patient--
4. if all of above doesnot work, restart computer, connect USB to another (or same) port (turn off antivirus) and see
5. Nothing, try in Setting>Applications>Development>debugging Mode
6. if not, try on another computer
7. still does not connect, change USB cable
8. Still nothing there might be a issue with your device, but I will not conceive that every quickly, trying all above few times should resolve the issue..
7.
Prosasan said:
Hello forum !
i have used a couple of hours now trying to find a solution to my problem both here on the site but also on the internets.
i just recently became the happy owner of a Note, but i have been completely unable to connect it to any of my pc's ive had a galaxy i9000 that i didnt have any problems with but with my note it wont work.
under win7 64bit - when i plug the usb cable a "boc opens" in the drop down menu called MTP and when i klick that nothing happens, ive trid the varies ways of removing the sd card unmounting it etc. and debugging and so on but wont work.
it randomly connected once but then it dissapeared from my computer.
under winXP 32bit it just says usb device not recognised, i really wanna root this thing so i can play with the true power of this amazing device.
and on both pc's ive tried with kies and driver packs both together and seperately.
anyone out there that can help me out with this problem ?
cheers
and happy new year
Prosasan
Click to expand...
Click to collapse

suresh.my said:
Hi,
Have you ticked USB debugging? Its under Settings>Apps>Development
Then it should show usb connection in notification tab, tap it and set usb storage as on.
Click to expand...
Click to collapse
i already tried that ive done all that i could think of
nasgilani said:
There may be few problems here so I will suggest different solutions, one might work for you
1. Turn off your antivirus and connect, it should work, see after connecting mobile that does it install something near "Bottom clock"?, open "my computer" see if it gives you N7000 (give it a minute). sometimes your computer settings are a problem
2. If no, Install latest Kies on your computer as it downloads Samsung drivers for your phone
3. after connecting 1st time, computer takes some time to recognize your mobile--be patient--
4. if all of above doesnot work, restart computer, connect USB to another (or same) port (turn off antivirus) and see
5. Nothing, try in Setting>Applications>Development>debugging Mode
6. if not, try on another computer
7. still does not connect, change USB cable
8. Still nothing there might be a issue with your device, but I will not conceive that every quickly, trying all above few times should resolve the issue..
7.
Click to expand...
Click to collapse
thanks ill try that now.
Cheers and thanks for all the answers and inputs

tried all but the usb cable..
nasgilani said:
There may be few problems here so I will suggest different solutions, one might work for you
1. Turn off your antivirus and connect, it should work, see after connecting mobile that does it install something near "Bottom clock"?, open "my computer" see if it gives you N7000 (give it a minute). sometimes your computer settings are a problem
2. If no, Install latest Kies on your computer as it downloads Samsung drivers for your phone
3. after connecting 1st time, computer takes some time to recognize your mobile--be patient--
4. if all of above doesnot work, restart computer, connect USB to another (or same) port (turn off antivirus) and see
5. Nothing, try in Setting>Applications>Development>debugging Mode
6. if not, try on another computer
7. still does not connect, change USB cable
8. Still nothing there might be a issue with your device, but I will not conceive that every quickly, trying all above few times should resolve the issue..
7.
Click to expand...
Click to collapse
Okey ive tried them all now, more then a few times most of these ive tried already and the antivirus isnt an issue as i dont have any on this pc. i think the problem either lays at the usb cable or the device itself. i will try and get to borrow a cable from a friend or something
Cheers for all the replies and helpfull inputs
Happy new year to everyone ^^

Have you tried connecting note to the pc using wireless?
Kies allows you to connect wirelessly.

good point!
sunnysurya said:
Have you tried connecting note to the pc using wireless?
Kies allows you to connect wirelessly.
Click to expand...
Click to collapse
i havent tried that, but does that work when u need to root it ?
cheers

I got root access
Prosasan said:
i havent tried that, but does that work when u need to root it ?
cheers
Click to expand...
Click to collapse
Hey,
I am able to get USB storage, and I got root access thru the batch files and help provided in this link: http://forum.xda-developers.com/showthread.php?t=1329360
I have Kies installed and this probably helped detect the phone.
Hope this helps..

USb Problem
Hi I've had the same problem.
I have been using the Note quite happily as a Mass USB storage since early December. Plugged it in this morning and I don't get anything. I have also tried the debugging and all the other things listed. Here's what I get:
Usb debugging on - just a sound and a charging indication
Usb debugging off -usb connected Mtp connected on the notification pull down page. When I click on notification it just shuts the window.
I have tried dialling *#7284# and selecting USB PDA which didin't do anything for me but others seem to have had some luck. See this link:
blog.vacs.fr/index.php?post/2010/12/24/How-to-repair-the-USB-not-detected-problem-on-Android-Samsung-phones
I will be rebooting tonight but I don't really want to.

only the Samsung USB wire works
I had this problem today. The Note would never connect the USB or external storage. I searched and found this thread.
I then noticed it was another USB cable (I gave about 1,000 now!). I tried the Samsung one, and it worked first time.
It is annoying, because these cables are normally swappable with any device. It appears Samsung have defined their own standard. The great thing about standards, of course, is that there are some many to choose from!

USB cable was defect - and replaced
Thanks for the help everyone