Multi coloured vertical lines across desktop screen

dub100za 0 Newbie Poster

15 Years Ago

I have a Dell Dimension E521 desktop PC about 2,5 years old. Operating system Windows Vista.

It works fine when used, but when not used it sometimes have multi-coloured vertical lines across the screen and the PC fan works overtime. The only solution is to restart and do a system restore.

It used to only happen once a while, but lately this has been a much more regular occurrence.

Please could anyone advise what causes this - is it a hardware/software problem? What can I do to rectify this?

troubleshoot-hardware

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