Black screen after start - Nexus 7 Q&A, Help & Troubleshooting

My sister has nexus 7 (2012) and yesterday she couldn't turn on her tablet. She is on stock 5.0.1 (i think) and she is not rooted. She managed to turn it on, but it booted it up to black screen and there are only battery, wifi and gps icon in the right corner. Whole screen is black and when you hold power button it offers power off. I tried to google the problem but i didn't find any useful informations.

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i resolved the problem by sideloading OTA zip from recovery and didn't lose any data

Related

Nexus does not go past boot screen

First of all, hi to all of you.
Me being a noob with the Nexus, something VERY messed up has just happened to me.
Let me explain from the beginning:
I received the nexus yesterday as a gift from a friend of mine who works at Google (yes, it is the one with the android waving a banner on the back of the phone)
Used it yesterday perfectly, even updated to 2.1.update perfectly fine.
Today, as the batter was dying out, I finally got home and started to charge it (the battery icon was white, with a red outline and a red slash across the battery icon)
Then, the Nexus stopped responding and turned off.
When I tried to turn it back on, it just stays on the boot screen and does nothing.
Now, I have tried the volume down + power button to get to the reset, chose "recovery" and it went right back to the frozen boot screen.
To my knowledge, it is not rooted (although I have read that the Nexus' that employees receive are rooted, I have no idea)
Now, I am stuck with a Nexus paperweight , it doesn't turn on and cant seem to get it out of the boot screen.
Any one here can lend a hand???
P.S. I hope I posted in the correct forum and want to thank anyone that can help ahead of time!
Update:
I did the volume down + trackball + power on thingy and I connected the Nexus to my laptop.
It comes out FASTBOOT USB in red, so it seems it is not totally bricked.
Found the USB drivers and...that's where I am stuck.
I know there is a way to recuperate the Nexus, but I have no idea how...any ideas?

[Q] MIUI-1.6.10-demonSPEED-v1.1, WILL NOT BOOT

So as the title says i currently have MIUI 1.6.10 demonSPEED v1.1 ROM and it is not booting, just completely unresponsive to everything i could think of. Im just throwing this out there to see if this has happened to anyone before or if there is a way of fixing this issue. I don't believe it has anything to do with thederekjay's rom just some unfortunate event. Anyway i fear it is possibly bricked and that i am gonna have to shell out the $150 to get a new mt4g from the insurance. Details follow...
So have had this rom for about a week now and has been working great. However this morning i was on the browser reading the news and it became unresponsive. After i let its display turn off (i just left it alone) i used the track pad to wake it. It was slow but it did show me the lock screen. When i attempted to unlock with a swipe down i felt the vibrations but the slide lock didn't budge. I then tapped the power button to turn the display off and tapped the power button once again to turn it on but nothing, just stayed black. I tried a soft reset by removing the battery, placing it back in, and powering back up. When i did so the t-mobile mytouch 4g boot image w/ the white background came on then went to an android image (lighting up a through d, looping) but then it just remained at the android image for five minutes! So i tried a soft reset again but the same thing would happen, act like it was gonna boot up completely but then gets stuck at the android image. So then i tried removing the battery and booting into recovery (via power, vol down, trackpad) that time the t-mobile mytouch 4g image would appear but after that the screen went black and after that every attempt with either the soft reset or boot into recovery wouldn't do anything at all, just a black screen as if the battery wasn't in at all. Its been like that all day and i can't figure it out so if anyone knows some info i would greatly appreciate it thanx

Nexus 7 32GB turns itself on after shutdown

Good night everybody, I'm dipping my toes into phone/tablet repairs and I have a strange case with a Nexus 7 32GB model, first it was stuck at the Google screen that has a open padlock, after flashing it with Android 4.2.2(JDQ39) and updated the bootloader from 3.12 to 4.18 it finally started working, but if I turn it off after 5 seconds the tablet boots up by itself, the power button is working fine, and I can lock and unlock the screen just fine using the power button, any ideas of what it can be?
My first idea was to do all the updates up to Android 5.0.2 hoping that it might solve the problem.
Best regards and thanks in advance.
It reboots and then works normal?
Really weird
Yes, I reboots and is working perfectly, except for the touch-screen, already tried 3 new digitizers and no sign of life out of them, works with no problem with a mouse.
I friend of mine told me that it is supposed to reboot when the power button is pressed for a long time, but I can't find evidence of that information googling around.

[Q] Screen goes black after booting into android.

Hello, yesterday I started having a problem with my i9505 that I never seen before....
I noticed that when I unlocked the screen, the screen kept black and just the led on the buttons turned on, so I tought the phone had frooze, and I took the battery out then put it back and turned the device on again...
The "samsung galaxy s4 i9505" scren appeared just fine, the cm splashscreen was fine too, but when it finished booting, the screen went black...
I noticed that the screen doesn't give any haptic feedback, the buttons that are lit give haptic feedback normally, and the home button also don't have any feedback, even by pressing it, or holding it...
If I take screenshot, the screen flashes white, but goes back to full black....
If I hold the power button, the options "Power off - Reboot - Airplane mode" appears, and the buttons work, but if I press outside the popup, the screen goes black...
So, there's no hardware problem related to the screen, since it works fine while booting, and on recovery mode
But there's something software related that makes the screen keep black after booting, and it's not brightness related, since the menu by holding power button shows correctly...
Has anyone seen anything like this?
My device is an i9505
The ROM I'm using is optimized cm12.1 from JDCTeam:
http://forum.xda-developers.com/gal...lop/exclusive-antaresone-alucard24-s-t3066696
Specht77 said:
Hello, yesterday I started having a problem with my i9505 that I never seen before....
I noticed that when I unlocked the screen, the screen kept black and just the led on the buttons turned on, so I tought the phone had frooze, and I took the battery out then put it back and turned the device on again...
The "samsung galaxy s4 i9505" scren appeared just fine, the cm splashscreen was fine too, but when it finished booting, the screen went black...
I noticed that the screen doesn't give any haptic feedback, the buttons that are lit give haptic feedback normally, and the home button also don't have any feedback, even by pressing it, or holding it...
If I take screenshot, the screen flashes white, but goes back to full black....
If I hold the power button, the options "Power off - Reboot - Airplane mode" appears, and the buttons work, but if I press outside the popup, the screen goes black...
So, there's no hardware problem related to the screen, since it works fine while booting, and on recovery mode
But there's something software related that makes the screen keep black after booting, and it's not brightness related, since the menu by holding power button shows correctly...
Has anyone seen anything like this?
My device is an i9505
The ROM I'm using is optimized cm12.1 from JDCTeam:
http://forum.xda-developers.com/gal...lop/exclusive-antaresone-alucard24-s-t3066696
Click to expand...
Click to collapse
You could have problems with your gapps, try minimal gapps for 5.1, made by jabj
Hope I helped :3
_Bon_Bon said:
You could have problems with your gapps, try minimal gapps for 5.1, made by jabj
Hope I helped :3
Click to expand...
Click to collapse
Do you mean flashing over the system I have now?
I tried flashing the ROM again wiping just cache and dalvik cache, but didn't help
Are you using xposed?
donkyshot said:
Are you using xposed?
Click to expand...
Click to collapse
No, never used xposed
I've seen this before, but it took me a while to remember where. Usually, a black screen as you're describing occurs when the device has no launcher app. Since there is no launcher app there's no way to do anything. Now, it's unlikely you removed all your launchers so I can only guess you have a software issue with the launcher app itself.
Try doing a dirty flash of the ROM, if you haven't already done so. Don't wipe data or internal storage, but do wipe the cache. See if that solves the problem.
Strephon Alkhalikoi said:
I've seen this before, but it took me a while to remember where. Usually, a black screen as you're describing occurs when the device has no launcher app. Since there is no launcher app there's no way to do anything. Now, it's unlikely you removed all your launchers so I can only guess you have a software issue with the launcher app itself.
Try doing a dirty flash of the ROM, if you haven't already done so. Don't wipe data or internal storage, but do wipe the cache. See if that solves the problem.
Click to expand...
Click to collapse
I alreadly dirty flashed the ROM wiping cache and dalvik cache
You're probably going to have to wipe everything then. Make a nandroid backup however, as you can restore your data partition after flashing.
Could be a Rom bug too...
Specht77 said:
Hello, yesterday I started having a problem with my i9505 that I never seen before....
I noticed that when I unlocked the screen, the screen kept black and just the led on the buttons turned on, so I tought the phone had frooze, and I took the battery out then put it back and turned the device on again...
The "samsung galaxy s4 i9505" scren appeared just fine, the cm splashscreen was fine too, but when it finished booting, the screen went black...
I noticed that the screen doesn't give any haptic feedback, the buttons that are lit give haptic feedback normally, and the home button also don't have any feedback, even by pressing it, or holding it...
If I take screenshot, the screen flashes white, but goes back to full black....
If I hold the power button, the options "Power off - Reboot - Airplane mode" appears, and the buttons work, but if I press outside the popup, the screen goes black...
So, there's no hardware problem related to the screen, since it works fine while booting, and on recovery mode
But there's something software related that makes the screen keep black after booting, and it's not brightness related, since the menu by holding power button shows correctly...
Has anyone seen anything like this?
My device is an i9505
The ROM I'm using is optimized cm12.1 from JDCTeam:
http://forum.xda-developers.com/gal...lop/exclusive-antaresone-alucard24-s-t3066696
Click to expand...
Click to collapse
I hope you tried reflashing your CM12. If that didn't work clear all data and flash a freshcopy of CM12. It could be a problem with your Rom too.... you could get an update soon..
I had the black screen problem and it turned out to be the silicon case I had just bought for it. Guessing it was pressing buttons together or something causing a corruption. After restoring it twice, twigged this and binned the case. Problem solved lol

[Need Help] Lenovo Yoga Tablet 2, 830LC - Black Screen

Good day,
I purchased brand new Lenovo Yoga Tablet 2 - 830LC, 8inches screen. after 1 or 2 hours of my first boot an OTA pops up and i decided to update my tablet to Lollipop 5.1.1 from stock Kitkat 4.4. Before the update i did not install any apps.
My problem is after the update. when the tablet sleeps or i press the power button, the screen normally turns to black and when i hit power button again the screen will not wake up (no display ), it stays black. to use my tablet i need to press the power button for 15 secs to turn off and hit the power button again to turn on.
Before the update everything is fine, What i had in mind now is to downgrade back to the stock. But i dont know how. i googled for any tuts for my tablet model but i did not find any.
Hope somebody can help me.
Thank you in Advance
Do you still have the tablet with you?

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