Macbook Pro A1278 white screen after loading bar

Roan

Member
As the title says, I have received an old macbook which displays a white screen after loading bar.

I have already tried:
-disconnected everything apart from DC-IN and display
-PRAM, VRAM, SMC reset
-reinstall macos
-boot from external drive

but to no avail.

Is it the graphics chip which should start working after the loading bar finishes but doesn't?

Edit: no sings of waterdamage found
 
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