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I can hear the unlock/lock sounds but my Nook HD's screen wont turn on

On Friday night the tablet ran itself down and shut off after watching some movies before bed. The screen and the rest of the tablet was functioning normally up to this point. I didn't bring my charger home with me from school, so it stayed dead for a few days. The tablet is now fully charged (or at least almost full. I left it on the charger overnight and this morning when I unplugged it I couldn't get the screen to turn on. At first I thought I forgot to plug the charger into the wall, but now I realized that the tablet *is* on, but the screen wont come on. My computer reads the device, and I can transfer files to/from.
When I hit the power/home button I immediately get a lock/unlock sound. Holding the power button to try to hard reset just makes it make the lock sound twice. Any advice here? Is my screen dead?

tdnookhd said:
On Friday night the tablet ran itself down and shut off after watching some movies before bed. The screen and the rest of the tablet was functioning normally up to this point. I didn't bring my charger home with me from school, so it stayed dead for a few days. The tablet is now fully charged (or at least almost full. I left it on the charger overnight and this morning when I unplugged it I couldn't get the screen to turn on. At first I thought I forgot to plug the charger into the wall, but now I realized that the tablet *is* on, but the screen wont come on. My computer reads the device, and I can transfer files to/from.
When I hit the power/home button I immediately get a lock/unlock sound. Holding the power button to try to hard reset just makes it make the lock sound twice. Any advice here? Is my screen dead?
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How long are you holding the power button. When I get the sleep of death under CM11 I have to hold the power button for a slow count of 15 then wait a few seconds and hold it again for a slow count of 3.

Odd frozen issue

So I took my charger with me to class today because my phone was almost dead. As it was charging I began to fiddle with it ex: go on reddit . Suddenly The phone began to lag and the screen shut off. I unplugged it and began to hold down the power button.... Had it held down for about a minute and still no results. The charging light is stuck green even when off the charger and the navigation buttons are stuck on. When holding down the power button the navigation buttons would also flash as it normally does but im not getting any feedback from the device. Anyone have any solutions? I need my phone to be working asap. If there isnt any hope i may as well upgrade.

Little update: I let the battery die out and plugged it into the charger. After half hour it still wouldn't turn on. Several hours after that I found it on and running. Very strange....

[Q] sony xperia T10 wont turn on, flashes red

Hi.
so the thing is, that even some time before this happened my xperia T10 was restarting while not connected to the charger.
I couldnt use it daily because it just kept restarting whenever somebody called me or I used the mobile internet.
Few days ago I left my phone without charger for night and I believe it kept restarting over and over again.
When I woke up, I couldnt turn it on, when its not connected to the charger it simply flashes red 2 times and thats it, if connected it flashes still red light as long as I press power button.
I thought its the same problem like I had with a tablet long time ago and it would be enough to let it charge for 2 days or so.
its 3rd day now and everything is still the same.
What should I do?
I dont have an acces to PC or laptops since I dont have one.
Any advice?

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Bump up

I opened the case and took the battery off for few hours and then put it in again, and ofc i attached all the cables and such back again.
Now when i hold volume down button and power button the led turns green for 5 secs and then fades. Then whenever i push power button the red led flashes still light but it dissapears after 10-30 sec and comes up again after few seconds.
help...

I know this from my xperia T. I hold (in holder not in my hand) the power button for long time (about hour) with connected power cable. And after this time it starts work. Try that

[Q] Z3c turns off all of a sudden during charging

Hi,
My Z3c recently suffers this problem that the phone may turns off itself all of a sudden,
I have rooted it few months ago and it's still running 4.4.4 until now.
It first happened a day before, I charged it for a while (not for long perhaps half hour) and then unplugged it from the charger to browse some websites before sleep, but then it turned off automatically without any notice, I tried to turn it on again but it just showed me the 'Sony' and then gone black screen again, I thought it was battery running out so I plugged it back to charger, it showed that 48% battery left, then I tried to turn it on (both volume button+power on button or pressing power on button only) again but still nothing just blackness, so i just simply charged it and went to bed. I checked it the morning after, still couldn't turn on, so i unplugged it, waited for like couple hours then finally I can turn it on but the phone only got 16% battery left.
It happened twice today, blackout during charging, unplug it from charger, wait for like 30 mins ish then it'd be okay to power on.
when I try to turn it on or force power on it, it'll still vibrant as usual but just nothing to show on screen when the problem occurs
does anyone know if it's hardware or software problem? would that be solved if I just factory reset it or I must take it to sony care centre?

Watch won't turn on.

I have a Samsung Gear Live watch and have had it for years. It was turned off for a while and now starts to turn on and it starts to boot up but then shuts off.
I have a picture of the screen on the watch but can't attach it to this thread. I did a reset and it still won't turn on.
Help, thanks
Dalelynn Fahlman