Can't switch on. happened twice already - Nexus 7 Q&A, Help & Troubleshooting

Hi
Today, I suddenly can't swtich on my Nexus 7. I am sure it still has at least 20% battery. And when I charge it, the screen doesn't display anything.
I was listening to the music with the screen off. And I unpluged the earphone due to a phone call. Then I came back after 20 minutes. I can't switch it on.
This has happened to me once. In the previous time, it had 30% battery. But I wasn't sure if I listened to music and did anything. It was OK after about one hour......
Anyone has the same issue?

Still can't switch it on. Is it bricked ????????????????????????????????????

finally, got it back to work again. By trying to do a recovery boot (vol up + vol down + power button). And first time, it didn't boot. Then press the power button again. it boots up my CyangoMod again. hahahahahaha
hope this would help other ppl

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Phone crahsed and now wont do anything [complete brick]

I was using my phone (43% battery) listening to music using the castbox podcast app when suddenly the music stopped and my phone completely froze, nothing worked not even stand by, i held down the power button to restart it but it just turned off and would not turn on again, i then left it and after around 10 minutes i see it has turned on, to a white google logo with a grey background (never seen that before) i hold down the power button again to try and restart it but it then just turned off again and wouldnt do anything regardless of what buttons i pressed (power/ power + volume up/down) i have plugged it in, still nothing, and nothing when pressing buttons while plugged in.
any one got any idea what could be wrong or how i could fix this?
hans002 said:
I was using my phone (43% battery) listening to music using the castbox podcast app when suddenly the music stopped and my phone completely froze, nothing worked not even stand by, i held down the power button to restart it but it just turned off and would not turn on again, i then left it and after around 10 minutes i see it has turned on, to a white google logo with a grey background (never seen that before) i hold down the power button again to try and restart it but it then just turned off again and wouldnt do anything regardless of what buttons i pressed (power/ power + volume up/down) i have plugged it in, still nothing, and nothing when pressing buttons while plugged in.
any one got any idea what could be wrong or how i could fix this?
Click to expand...
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Welcome new XDA member.... first post? Many threads on this topic. Have you held the power button down by itself for several minutes? Were you having ANY battery issues leading up to this? Can you boot to Recovery? Are you running TWRP?

Black Screen Of Death!!! HELP!!!!

i have my phone for almost 7 months already. my phone went black and it wouldnt charge nor turn on. it wouldnt also turn on the LED blue light. been doing all the tips i can do. dont know if my phone is dead nor anything. cant feel no vibrate nor anything at all. i think my phone is dead dead. can you guys please help me. i got important phone calls and everything that i need to get it done. let me know asap. thanks!!!
If it doesn't charge, won't turn on, and doesn't vibrate, sounds like it's dead! Get in touch with Samsung about a replacement
Try a wireless charger
if you can charge it, can you get into download or recovery mode using button combinations?
Have you really tried *all* the possible 'tricks'? I remember the exact situation you just described happened to me a couple months ago. I left my phone charging overnight and when I woke the phone did not respond at all to any button smashing or resetting etc.. so what I did was, hold down the power button, Bixby button (not sure if that was necessary at all), and the volume *down* button all the same time (like you would press ctrl + alt + delete on a keyboard). I held it for 10+ seconds and at last my phone entered the recovery mode set-up which prompted me to press the volume down button once again to restart the phone. If you haven't tried this, give it a go!

[Help] one plus 6t not vibrating or turning on after being plugged up

So I have a rooted oneplus 6t that was doing quite well for a little while now but for some reason today it died when it was hooked up to a charger. When I unplugged it and plugged it back in it did its usual vibration to signify it was connected but then it showed a qualcomm crash error (died too quickly to see it fully but it was small so I at least saw some of what it said) now when I try to let it charge it doesnt vibrate and doesnt even turn on when I left it on charge for a good hour now and when i hold vol up +power,vol down + power,both vol +power,or just power for their respective seconds to get the phone to respond. Tried looking for a answer online but none are similar to what i am having atm. Also my computer wont even see it either while it's like this. I've tried other cords as well to see if it was a cord issue and wasnt it's been sitting on the charger since 10:55 am est. Help?
It usually just takes some persistence. Usually the power + volume up will force it off, and then power it back on does the trick, sometimes it seems like it's all three buttons (which shouldn't do anything?) . I've had a couple times I've been just about to give up when it finally boots back up to fastboot.
Volume Up + Power while turning on will boot to fastboot.
Volume Down + Power while turn on will boot to recovery.
Holding Volume Up + Power should force the phone to turn off.
Volume Up + Volume Down should put your phone in Download mode for the MSM Tool.
Make sure you hold the buttons much long than you think you should have too.

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