Problem with Laptop Display

Nov 21, 2018
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I have a Toshiba Notebook Satellite C855-22M, Intel i5 3rd gen. Laptop's display shows "scrambled", image is flickering, colors are not showing correctly. You can barely see the screen either in BIOS mode or in Windows.

OS starts but the image is very poor. The same applies when connecting the laptop to an external monitor/TV via HDMI.

Tried with a Live OS and reinstalling Windows on another hard drive; nothing changed.

Replacing the motherboard could solve the problem?

Can you help me?

Thank you in advance.
 
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