Hello all, I am trying to fix my sapphire 7950 3gb graphic card which is suffering from vertical solid squares, i am pretty sure i have a ram chip that has died. The graphic card works fine on general use, internet, HD streaming, flash player and HD music but as soon as any application is started the solid vertical squares appear. This is the only time i have these squares. I was wondering would a bios update work or am i looking at something more severe like a reflow of the solder. I was thinking that a reflow would be pointless as they are solid square lines. Any help much appreciated! This is the bios on the card at the moment: http://www.techpowerup.com/vgabios/123785/Sapphire.HD7950.3072.120330.html and i have tried both current and beta drivers. Thank you .