Like when using my internet browser Firefox all of a sudden the screen would flash to a black screen come back but it would all corrupt. It is hard to explain. Hasn't happen sense going back a image but still I would like to know what could cause it please? Thanks. Trying to find a YouTube video for an example. P.S. Sorry wasn't sure where else to post this. There is no General pc hardware forum If you need to move it mods please do! Thanks.