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Screen changes colors from green,red and blue.

HP Recommended
Touch Smart 520 PC
Microsoft Windows 7 (64-bit)

Hello everyone,

My Touch smart 520 PC screen sometimes it goes blank and starts changing colours between red, green & blue although the system in the background is working properly. I have formatted the hard disk and reinstalled the original software but still, this happens from time to time.  Kindly advice. 




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