Acer Helios 300 screen no longer turns on after opening it up

TEdward
TEdward Member Posts: 1 New User
Opened the laptop to clean the dust out of it and repaist it. After reassembly, the keyboard lights up and the fans start spinning, but the screen stays black, not even the backlight turns on. 

Opened it up again, checked every cable and the such. I saw no visible damage. At this point I'm afraid that I damaged the motherboard or the GPU.

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