I have been reading through the forum and tried multiples things but I am still stuck, so I am hoping someone might have some tips for me.
My wife used my tablet last week (in windows 10 mode, not android). I think she initiated shutdown but closed the lid before it completed. She left it for the night with a USB mouse plugged. In the morning when I took the tablet, the LED was flashing. I long pressed the power button and then the LED stopped blinking. Since then I have not been able to boot the tablet.
WHAT IS THE SITUATION
LED stays off, even if I plug the tablet to the charger
I have tried the 3x press long press 15sec, 30sec, press volume up with power.. nothing worked
I opened the case to check the battery: it is charged (I measure 4.1V on the red and black wires going from the battery to the board)
I tried to plug a keyboard to a usb port (to do the F7 keypress trick) but I do not think it is being powered. When I plugged my phone to the usb port, I see the USB giving power for 1sec, then no power for 1 sec, then again power for 1 sec, etc... It looks like the USB ports are not giving constant power, which is why the keyboard is not working...
I am about to give up as I think I have tried every possibility I could read about here... If anyone has a suggestion, that would be very welcome!