Redmibook won't start - black screen

[emilevirus]

I have Redmibook Pro 14 AMD 6800H. When I turn on the laptop, the fans spin, the kb backlight lights up, the caps lock led is on but no screen. I tried unplugging the battery and holding power button for 30s but no effect. Do you have any idea? The kb backlight turns off after 30s and turns back on if I press a key which means the motherboard isnt shorted right?

[djksm]

open it up and see if the screen cable isnt loose. 

  

[emilevirus]

12 minutes ago, djksm said:

open it up and see if the screen cable isnt loose. 

  

It's not. I tried an external monitor and it still didn't power on. If the screen cable would be loose. it would still boot into Windows right?

[djksm]

2 minutes ago, emilevirus said:

It's not. I tried an external monitor and it still didn't power on. If the screen cable would be loose. it would still boot into Windows right?

it would. try to unplug the battery and put it back in. maybe that will solve your problem

[emilevirus]

8 minutes ago, djksm said:

it would. try to unplug the battery and put it back in. maybe that will solve your problem

As I said, I already tried that and holding the power btn 30s while battery is unplugged.

[djksm]

4 minutes ago, emilevirus said:

As I said, I already tried that and holding the power btn 30s while battery is unplugged.

oh. see if your disk drive is broken, and see if windows is on it

[emilevirus]

The NVMe is fine and Windows is on it.

[djksm]

1 hour ago, emilevirus said:

The NVMe is fine and Windows is on it.

oh ok. well, check if anything is burnt out on the mb