Problem with the tablet - Nvidia Tegra Note 7

Hi, I recently downgrade my own tn7(evga.p1640) of android 5.1 to kitkat 4.4.2 and i have a really annonying issue.
When i press the block bottom my tablet goes black, i dont know if is off or just frozen, also it happens when i press too many times that bottom(like 5 times), i already reset my tablet but nothing work, maybe is some problem with the sd? Pls help

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Power button and boot problems

Hello friends. I have a problem with my Samsung i9500 Galaxy S4. The thing is I can not use the button of power on or turn to lock the screen because the phone is turned off or rebooted and the Samsung logo appears, then it looks like is about to initialize but then reappears Samsung logo. The only way I can turn on the phone is by pressing the buttons of recovery mode and after about 3 attempts, the phone starts normally. I have the stock Rom 4.3 Jelly Bean. On the other hand this started since I took out the SD memory. I have reinstalled the ROM again and continued doing the same. No it may be. I think it is a problem in the boot but I can not solve it. I can not lock the screen with the power button because the phone turns off. I hope you can help me. regards
Elvin_89 said:
Hello friends. I have a problem with my Samsung i9500 Galaxy S4. The thing is I can not use the button of power on or turn to lock the screen because the phone is turned off or rebooted and the Samsung logo appears, then it looks like is about to initialize but then reappears Samsung logo. The only way I can turn on the phone is by pressing the buttons of recovery mode and after about 3 attempts, the phone starts normally. I have the stock Rom 4.3 Jelly Bean. On the other hand this started since I took out the SD memory. I have reinstalled the ROM again and continued doing the same. No it may be. I think it is a problem in the boot but I can not solve it. I can not lock the screen with the power button because the phone turns off. I hope you can help me. regards
Click to expand...
Click to collapse
It happens the same problem as you, could you fix it?
Elvin_89 said:
Hello friends. I have a problem with my Samsung i9500 Galaxy S4. The thing is I can not use the button of power on or turn to lock the screen because the phone is turned off or rebooted and the Samsung logo appears, then it looks like is about to initialize but then reappears Samsung logo. The only way I can turn on the phone is by pressing the buttons of recovery mode and after about 3 attempts, the phone starts normally. I have the stock Rom 4.3 Jelly Bean. On the other hand this started since I took out the SD memory. I have reinstalled the ROM again and continued doing the same. No it may be. I think it is a problem in the boot but I can not solve it. I can not lock the screen with the power button because the phone turns off. I hope you can help me. regards
Click to expand...
Click to collapse
Upgrade to Kitkat! Or you can flash stock 4.3 OR a factory data reset may help. Try n reply.

Black lines on the screen

I messed up with my LG G2 D802 and i need help because i believe it's a software problem.
When i was installing the latest cm12.1 nightly, after trying a few other roms, i also installed, by mistake, an old jb bootloader/bootstack.
As result the phone entered in Bootloop, but not a normal bootloop, on the screen start appearing some crazy interferences and then the phone boot up, but the screen not. The phone made sounds and the touchscreen work, but the screen was black/off.
I've managed to solve the problem with an unbrick method, but now i have a huge problem: the screen, on the rigth side, from the top to the botton has 6/7 black lines. I have no idea how to solve this and if is a hardware problem ... I've read it's an kernel problem, not hardware, but don't know how to solve the problem :/
Picture:
https://meocloud.pt/link/58d13900-ffa8-4114-8957-8c4b973bad1a/IMG_20150916_020454.jpg/
I feel your pain
Hi mate
Same thing happened to me.
Background info: I had successfully upgraded to CM12.1 , was running fine for a few days then I wanted to update my TWRP, updated the recovery and just went to check that I had OTG cable support then boom, boot loop.
It didnt just loop it just loaded loaded loaded, then the screen made some funny sounds. and then shut down. I hard reset to recovery and reinstalled CM12.1 and was able to successfully exit the loop. but damage to screen had occurred in the exact same place, and method right side of the screen.
Tried rinstalling original jellybean software from my backup. no success, and also flashing other versions of CM12.1 nothing.
After some research I saw that this is a manufacturing fault and that this occured quite often. it appears that the best solution is to buy a new screen as it is the actual hardware that is damaged in the screen digitizer. I might be wrong, and I pray that I am because I want to fix it too. in the end I just bought a new note 4 (not note 5 as i wanted SDcard storage). Phone was 2 years old and a new screen costs a fortune. But i miss my little G2 and its super fast speed and simpleness. :crying::crying:
If someone else has the solution to this problem on the forum we are all ears.

Zuk Z1 went dark

So i have bought my phone about 3 months ago. All have worked well, but a couple off days ago, it have had some problems.
It sayed 2-3 days trebuchet process have stopped and process.android.process.media has stopped. The only solution when this came i had to restart the device. I tried yesterday a factory reset but it didnt work.
Yesterday evening it did again the process stopps and then i tried to restart my phone. But when it shut down it dosent anymore go on. Now it dosent react to anything, not the normal powerbutton and not even the powerbutton + volume -. I havent rooted the device. So is there anything i could anymore do or should i just send it to warranty repair?
Im very desperate, thanks for all the help. But if you have an solution can you write it step by step, im not so experienced in smartphones.
Now i got the phone to restart but when it start it says over and over again that trebuchet has stopped. What can i do to this problem?
Edit: And now its stucked in the Zuk start screen. Dam im getting frustated...
Enter in recovery mode and do a factory/cache wipe
Have you installed any themes? Because some cm13 compatible themes cause system ui crashing
Hello, havent installed any themes. How do i get to recovery mode?
If the recovery mode is volume up and power button. This neither works, its still dead. Dosent even vibrate when pressing power button long.
Power on the phone , when you hear the vibration and the zuk logo appears , press both volume buttons, this should let you boot in the recovery
What happens if you connect the fone to charger?
But the phone dosent power on. So i cant do that. And no, the battery is not dead.
Ok, if you cant boot it, the last thing is warranty , where have you bought your device?
I could boot it today on the morning 1 time but then it again died and now its totally dead. I bought it thru tomtop, have put a message to the seller already. Lets se what they answer.
Ok, hope the seller will answer you , continue trying to boot it .
Let me know if wou solve it ��
Yeah the seller answered that i get a new device. But then on tuesday i tried a last boot, and it got alive again! I did the factory reset and now the phone has worked perfectly after that [emoji106]
But now the trebuchet keeps stopping and after that all the processes i have open. So now i changed to Nova launcher, i hope it would solve the problem.
Glad to know you solved the problem
Trebuchet problemi shoul be solved with marsmallow update.
maryankomar said:
Glad to know you solved the problem
Trebuchet problemi shoul be solved with marsmallow update.
Click to expand...
Click to collapse
Yeah it was solved like 5 days. Now the apps started to crash again :crying: And now the f***** phone dosent even start. Its just stuck in the Zuk powered by android start screen. Is there something i could do? I dont think the factory reset would help in long term beacause it didnt help the last time. Or should i just send the phone to the seller and request for a new one?
Edit: And now the factory reset dosent even work. When i try to reboot it after Factory reset its stuck on the Cyanogen start screen, so i think my last option is to ship the phone to the seller and hope i get a new device.
Edit2: And now after a second factory reset the phone started to work again. What can cause this type of meltdown? Could it be somekind of hardware problem or is it a software problem?
The Best solution is to change the device if you can, because you're not sure if it will work in the future.

Very strange booting problem with my samsung galaxy S5 (SM-G900F)

Hello,
I hope someone can solve this problem for me. On a day i wanted to check my phone and I saw only the logoscreen of samsung. My first reaction was to pull the battery out and put it back in. So I restarted my phone but it was not going further dan the logoscreen of samsung and always kept restarting automatically. The very strange thing is when I remove the battery for more than 15 minutes and than put the battery again in the phone and push on the power button it starts with no problems. When the phone is completely started and I restart the phone manually the problem comes back again and the screen is not going further than the logoscreen of samsung and keeps restarting all the time automatically. The phone is 2,5 years old and I used it daily
What I already tried to solve the problem:
- Reset factory settings and wipe cache partition with the "power, volume up and home button"
- Installed firmware from sammobile with odin (firmware completed but still automatically restarting at logoscreen)
- Blew the powerbutton with air
- Rooted the phone with Kingo Root
I hope someone can help me? Dont know what I can do more
Root the phone properly instead of using kingoroot
*Detection* said:
Root the phone properly instead of using kingoroot
Click to expand...
Click to collapse
The problem with rooting is that it sometimes has to restart the phone and then I have to problem again that it is not going further than the logoscreen. How do you root? Do you have a guide?

Note 4 black screen problem

I have been having a problem with my note 4. When ever the phone is powered down and powered back up it reboots normally. I see my lock screen and everything is fine. The problem is when the phone locks either by the power button or just by screen time out. It stays a black screen even though i can swipe my my finger and hear it being unlocked. They only way to fix it is to take the battery out and reboot it then everything is good until i lock it again. Any help would be appreciated thank you.
Sorry me again just wanted to ask another question. I rooted my note 4 after this problem started happening. I used cf-auto root so from what information i have seen im still running stock recovery justed rooted. I was wondering can i flash a Samsung software upgrade without any problems. My problem with the black screen started after an software update so i wondering if i could flash and reinstall the update to see if that fixes my problem. Once again thanks in advance for your help im just trying to save my phone and hoping its not a hardware issue.

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