HP TouchSmart IQ770 Vertical Lines Screen Problem

!±8± HP TouchSmart IQ770 Vertical Lines Screen Problem

I have a problem with my TouchSmart IQ770. The vertical and horizontal lines and boxes occur on the screen even in the BIOS before starting the windows. The screen flashes too. HP suggested me to perform a power drain but it doesn't work.

HP TouchSmart IQ770 Vertical Lines Screen Problem

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