Notebook Asus n56vz. White screen when turned on. What could be the reason?

Question

ASUS

A couple of weeks ago I bought an asus n56vz, not new. Took it apart, cleaned it, changed the thermal paste. I assembled, installed win7 and ubuntu, set up a working environment and could not get enough of it for two weeks. My joy ended today, I watched a movie on the road, the laptop was discharged, showed 5% charge. Regularly completed the work of Windows, got to the electricity, put it on charge, turned it on in about five minutes, the screen showed the asus logo, then a white screen and turned off after a second. When you turn it on again, it shows a white screen and also turns off. What could be the problem?

Answer 1

Does the laptop turn off or just the screen?
In any case, try connecting an external monitor. If there is an image with it, look towards the train.
Also, try resetting the BIOS by disconnecting the main battery and the BIOS battery.
By the way, how did you determine that the charge is on? In general, I have a big suspicion that somewhere unsuccessfully shorted to the board.