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wont turn on

I was using my atrix and put it down went to get something to eat came back 15mins later and it wont turn on! It was at 56% battery! So i plug it in and the green LED turns on but I can't do anything. I have pressed the power button, and I have pressed the power and volume down together both for 10+ secs and nothing is happening please help!

Ever get it back on? My battery drained to 1% last night, so I shut it down, charged it all night, and now mine wont turn on. Has the green light just like yours.
Sent from my phone.

Markyzz said:
Ever get it back on? My battery drained to 1% last night, so I shut it down, charged it all night, and now mine wont turn on. Has the green light just like yours.
Sent from my phone.
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I had to reboot mine in to flash mode in order for mine to come back up. I had to hold the down volume (or up cannot remember right now) + power for a minute nearly. Then it rebooted correctly into normal mode.

Markyzz said:
Ever get it back on? My battery drained to 1% last night, so I shut it down, charged it all night, and now mine wont turn on. Has the green light just like yours.
Sent from my phone.
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So I ended up calling AT&T and they went ahead and shipped me a new MAHD.
I took the dead phone to work and tried charging with my work charger, and now it works! When it finally turned on, the battery level was at 3%. So lesson learned: Do not let your battery drain to 1%!
Sent from my phone.

me too....
Lionsbane said:
I was using my atrix and put it down went to get something to eat came back 15mins later and it wont turn on! It was at 56% battery! So i plug it in and the green LED turns on but I can't do anything. I have pressed the power button, and I have pressed the power and volume down together both for 10+ secs and nothing is happening please help!
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I am having the same problem. I can get the boot screen up if i hold the buttons in at a certain time while the phone is plugged in and attempting to turn on. however, the phone cuts out no matter what and repeats the cycle even with the boot screen up. during the few seconds i can get the boot screen up, i'm unable to select an option, only scroll up or down and highlight them. then the phone cuts out and 20 secs. later attempts to turn on again but never gets past the motorola icon. Any suggestions? I originally thought it was the battery so i ordered one and installed it correctly and charged it, but still the same thing is happening. When plugged into a pc, charge light comes on but phone won't attempt to turn on....?????????

katlic said:
I am having the same problem. I can get the boot screen up if i hold the buttons in at a certain time while the phone is plugged in and attempting to turn on. however, the phone cuts out no matter what and repeats the cycle even with the boot screen up. during the few seconds i can get the boot screen up, i'm unable to select an option, only scroll up or down and highlight them. then the phone cuts out and 20 secs. later attempts to turn on again but never gets past the motorola icon. Any suggestions? I originally thought it was the battery so i ordered one and installed it correctly and charged it, but still the same thing is happening. When plugged into a pc, charge light comes on but phone won't attempt to turn on....?????????
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Our phone doesn't receive power from the cable until it's fully booted. Factory cables are a good work around.
Sent from my MB886 using xda premium

I have the same problem.
I think it's impossible to fix.
I tested with original charger.
I have also tried every possible button combinations.
and does not start
Has anyone been able to fix it?

won't turn on/can't select any boot options

I have a new Motorola Atrix HD. I was using it and the screen went black. i hit the power button to unlock but nothing happened. i plugged it in but nothing happened. i took the back off to see if the battery was disconnected. I didn't know the battery was different than other phones and ripped the power cord connecting the battery to the phone when i took it out. lesson learned. Ordered a new battery and installed correctly. phone won't turn on. The green charge light blinks when i plug it into the wall and then stays on for about 20 seconds and then the phone tries to turn on but while the motorola icon is illuminated, it cuts back out and repeats the cycle. I left it plugged in for a couple hours and still the same thing. i tried holding in power and volume buttons for the boot screen. if i do that just as the phone attempts to turn on i can get the screen up and scroll the list of boot options with the power buttons but i can't select any of them and the phone cuts out after the same amount of time. Everytime. When i plug it into my laptop, the light blinks on and then stays on like with the wall, but the phone doesn't attempt to power up. Please, any help would be greatly appreciated. i have read a lot of forums where the battery was acting up because of the chargers people were using. The difference between my situation and those of the people i read about is that my boot screen cuts out and cannot be used. This all happened 2 days after my exchange period ended and because i took the back off myself, best buy won't have anything to do with me so i'm on my own and cannot afford another phone right now. Thanks in advance for your time and concern.

katlic said:
I have a new Motorola Atrix HD. I was using it and the screen went black. i hit the power button to unlock but nothing happened. i plugged it in but nothing happened. i took the back off to see if the battery was disconnected. I didn't know the battery was different than other phones and ripped the power cord connecting the battery to the phone when i took it out. lesson learned. Ordered a new battery and installed correctly. phone won't turn on. The green charge light blinks when i plug it into the wall and then stays on for about 20 seconds and then the phone tries to turn on but while the motorola icon is illuminated, it cuts back out and repeats the cycle. I left it plugged in for a couple hours and still the same thing. i tried holding in power and volume buttons for the boot screen. if i do that just as the phone attempts to turn on i can get the screen up and scroll the list of boot options with the power buttons but i can't select any of them and the phone cuts out after the same amount of time. Everytime. When i plug it into my laptop, the light blinks on and then stays on like with the wall, but the phone doesn't attempt to power up. Please, any help would be greatly appreciated. i have read a lot of forums where the battery was acting up because of the chargers people were using. The difference between my situation and those of the people i read about is that my boot screen cuts out and cannot be used. This all happened 2 days after my exchange period ended and because i took the back off myself, best buy won't have anything to do with me so i'm on my own and cannot afford another phone right now. Thanks in advance for your time and concern.
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Is it possible that the that connection between the power cord and the phone itself is loose or damaged? I'm just guessing here as I have never opened up the back of my phone.

I would check your battery terminals then leave it to charge if it does. You could also try a factory cable. Another thing would be to try fastboot while connected to your laptop and see if it stays on, and if it does, try reflashing all partitions.
Sent from my MB886 using xda premium

Mi5 won't start

Hi,
My Mi5 won't start now. It was having about 60% when I switched on NFC for the first time. I may have switched the NFC on and off a couple of time. Then I inserted the phone into its case , and by mistake the wrong way which might have pressed the power button / volume button , while I was inserting the phone into the case I noticed the phone was turning off. Quickly I realized the phone went the wrong way into the case and I removed and reinserted it and then pressed the power button, but nothing happened. Tried pressing volume up / down / power button but no use. But the phone was warm.
Now, the only sign of life in the phone is when charging it using the regular original charger. The light is initially purple and then turns to green but then it switches off. Tried connecting it to laptop but does not show anything. Also, the safe mode boot method does not work. So, the phone does charge but pressing power button does not turn it on but just makes it warm (some kind of startup loop)
I've been using the phone for last more than 2 years and it has original setup and updates are automatic and regular.
Just don't want to trash the phone if it can be revived.
Looking for advise.
Thanks

Stuck on "please lock bootloader" screen when plugging in after depleting the battery

Stuck on "please lock bootloader" screen when plugging in after depleting the battery
No button inputs work. The only solution seems to be waiting until the battery fully runs out and plugging it in again, after which it sometimes boots up. At least I got it to the first time, it failed just now. Maybe I need to hold some button combination while doing so?
How do I fix this properly? And what's a sure way to get it to boot from this? I'm already wasting half and hour on a minute's charge, God forbid I ever forget about it plugged in for longer. Would have to throw it in the drawer for a couple days and probably end up with some permanent burn-in too.

I haven't seen the screen in ages but doesn't it tell you to press the power button to acknowledge the unlocked bootloader? Also from memory it tells you it will automatically continue but it never does.

What seems to have done the trick is holding power&volume+ (probably just power is enough), so it loops through the 'empty battery' splash screen at least once. I think that's how I did it the first time too.

drwharris said:
I haven't seen the screen in ages but doesn't it tell you to press the power button to acknowledge the unlocked bootloader? Also from memory it tells you it will automatically continue but it never does.
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It never seemed to make any difference whether I pressed the power button or not, in fact it always booted up automatically after some time, this scenario excluded.

I suppose my problem might lie in the fact that buttons aren't working on that screen for whatever reason? Rather than it not going away automatically after battery depletion.

It is a bug in the bootloader. You can get out of the screen by disconnecting (!) the cable, and then holding all three buttons for multiple minutes until the device forcefully shuts down.
Before you do that, leave the phone plugged in for 10 minutes or so, so it can charge the battery to some extend. Then start the phone without (!) the cable plugged in, and wait until it boots into Android. When it is booted, you can safely plug in the cable and let it charge to 100%.
Just make sure you leave it for some minutes so it has enough charge to boot through the bootloader and start Android.

VonZigmas said:
I suppose my problem might lie in the fact that buttons aren't working on that screen for whatever reason? Rather than it not going away automatically after battery depletion.
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i had a similar problem after a failed attempt to boot into recovery.
for me the following did do the trick and booted my phone back into system:
- deplete battery completely
- plug in charger and keep power button pressed until phone is charged enough to attempt boot
- keep the power button pressed until nokia logo appears

THMSP said:
It is a bug in the bootloader. You can get out of the screen by disconnecting (!) the cable, and then holding all three buttons for multiple minutes until the device forcefully shuts down.
Before you do that, leave the phone plugged in for 10 minutes or so, so it can charge the battery to some extend. Then start the phone without (!) the cable plugged in, and wait until it boots into Android. When it is booted, you can safely plug in the cable and let it charge to 100%.
Just make sure you leave it for some minutes so it has enough charge to boot through the bootloader and start Android.
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How long is "multiple minutes"? I tried holding all three buttons at first, but gave up after probably a minute of nothing happening. I'll keep that in mind though.
Is there any hope for this to be fixed in the future?

VonZigmas said:
How long is "multiple minutes"? I tried holding all three buttons at first, but gave up after probably a minute of nothing happening. I'll keep that in mind though.
Is there any hope for this to be fixed in the future?
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Well, multiple definitly isn't one I haven't stopped the time yet, but expect waiting and pressing them for around 2 to 3 minutes, maybe even 5. It might sound stupid, but it will work.
About fixing it, I don't know. It might be a bug in the reference bootloader that Qualcomm provides for Snapdragon 835 chipsets, and I doubt that FIH / HMD have the resources to debug and fix that.

I get this same screen while the phone's powered off + charging and it's annoying.
I was going to start a thread to ask whether it's possible to charge this phone while it's turned off (without the screen being kept on) after unlocking the bootloader. I guess based on the posts in this thread, that's not possible? [emoji2357]

OneDream said:
I get this same screen while the phone's powered off + charging and it's annoying.
I was going to start a thread to ask whether it's possible to charge this phone while it's turned off (without the screen being kept on) after unlocking the bootloader. I guess based on the posts in this thread, that's not possible? [emoji2357]
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No, I guess it isn't. I've tried to plug it in while it's off and turn off as it's charging and in either case it resulted in the phone hanging up on that screen. I can confirm though that holding all three buttons for a while does turn it off and allow me to boot normally which is cool.
But is that possible with a locked bootloader anyway? Or does it always power on? I can't tell if I ever needed it to charge like that.

I see this "warning" message only on android pie builds, it doesn't seem on oreo builds. I think problem seems that kernel dependent (oreo is on 4.4.78 and pie is on 4.4.153). There is one way to get rid of that message, as @THMSP said, holding all 3 buttons pressed during 2-3 minutes and let it to be shuted down. Then, let the device to boot normally and plug in. Finally you shouldn't connect to charger when it's turned off on any pie build.

SM-T800 boot-loops and dies the moment you let go of the power button?

I've got an SM-T800 behaving very oddly, hope someone knows what's up!
If you attempt to boot it, it will flash up the Samsung logo, then die, and repeat in an endless boot-loop.
If you hold the power button down, oddly, it changes; instead it will proceed to the animated SAMSUNG logo which will then continue to pulse in and out indefinitely until you get bored and release the power button... at which point it instantly dies and then begins boot-looping again.
If you try to enter recovery by holding power + volume up + home, it will do so, but the moment you let go of the power button it dies.
Thinking it was down to the battery, I tried replacing it, and if anything the behaviour has been worse since!! It was at least possible previously to get the thing to sit in recovery without rebooting, but now it never does if you let go of the power button.
I've also tried reflashing the default firmware via ODIN; the one thing that always works is the download mode (power + volume down + home); I can reliably boot it into download mode and flash via ODIN, but then on reboot, it gets partway through the installation process (like a few seconds in) and then boot loops back to the samsung logo again.
Now it's difficult to get it to even charge; it will keep looping the charging symbol (battery with a lighting bolt on it) on and off the screen unless you fettle the buttons until it just sits at a black screen. I can see from the USB charger it is still drawing charge current.
Any ideas??!

It probably dead. Speaking as someone who had this issue for countless devices, I say that your battery probably can't hold enough charge anymore to completely power the device through.
It doesn't matter even if you charge it to 100%. The battery had degraded to a point where a minimal charge required to let the device pass the crazy power surge required during Android boot is just not meeting the minimum.
Hence it fizzles out. And rebooted.
I kept replacing my Galaxy S5 battery until few months ago, no battery I bought is enough to fully power it on anymore.

Thanks for the response; alas, I already tried replacing the battery; if anything it was worse! I suppose it is possible that the replacement battery was also a dud, though? Unfortunately it may be difficult to do a load test (a lot of batteries might not even provide power without specific conditions being met), perhaps I can probe the pins while it tries to boot and see if the voltage sags or something.

I have the same problem and I found this in Yoube; search for "Samsung galaxy tab s restarting issue" video from "Electronics repair school"
It shows bad contact on battery connector soldered side...

I have the same issue, I can hold down the power button and it will boot up completely. As soon as I let go, it reboots over and over again. So far I've replaced the:
USB Charger Port Connector Module Flex Cable
LCD Connector Flex Ribbon Cable
and the Battery
No change in boot up - The only option left , I think, would be to replace the main board. Any thoughts?

i got that issue too,
i did kind of a battery recalibration
meaning: i fully discharged my sm-t800 (took me some time doing reboots until the tab was totally dead)
then charged it to 100% without booting it
unplug it and reboot.
and well, now it works again
the clue here is:
the system stored wrong battery data over the time, so it randomly thinks the battery is at 0% and does an auto-shutdown. To repair this, you have to reset the system with recalibrating the battery, so the system deletes all old data and starts logging new data.
in my case this procedure worked out great
hope you guys will have the same success as i did

Hello everybody!
I thought I would let you know how I solved this issue WITHOUT having to do a full factory reset...
Or so I thought.
Turns out that it started shutting down and bootlooping after a while again.
Even after I ordered a replacement battery and charged that up. At first it looked like it would work and then it started shutting down randomly and bootlooping.
Probably will have to throw the thing out since it doesn't want to work. Makes no sense how its so uncooperative even after putting in a new good battery in the tablet but there's not nuch more that can be done.
If I just start it *sometimes* it will boot up and get to the android OS. Then work for a while before shutting down.
Sometimes it just bootloops at the Samsung Galaxy S logo over and over.
Holding the power button it does boot but if you release the button it MOST often just shuts off and bootloops.
Anyone know if there's anything to be done to fix this?
//Kindest regards XDAFan2015

xdafan2015 said:
Hello everybody!
I thought I would let you know how I solved this issue WITHOUT having to do a full factory reset...
Or so I thought.
Turns out that it started shutting down and bootlooping after a while again.
Even after I ordered a replacement battery and charged that up. At first it looked like it would work and then it started shutting down randomly and bootlooping.
Probably will have to throw the thing out since it doesn't want to work. Makes no sense how its so uncooperative even after putting in a new good battery in the tablet but there's not nuch more that can be done.
If I just start it *sometimes* it will boot up and get to the android OS. Then work for a while before shutting down.
Sometimes it just bootloops at the Samsung Galaxy S logo over and over.
Holding the power button it does boot but if you release the button it MOST often just shuts off and bootloops.
Anyone know if there's anything to be done to fix this?
//Kindest regards XDAFan2015
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I have had the same experience with my T800. What I have been doing is to tape the power button down using scotch tape. The tablet can be waken up by pressing the home button. In my case, I need to remove the button to recharge the tablet.. So far so good.