My computer has been running fine, but a while back, the desktop began to have strange lines. the lines ranged from all sorts of colors. all i remember is, is that after i played day of defeat (counter strike), the screen on day of defeat changed to the colored lines to a point that i could not see where i was going. i thought this was just a game problem, so i restarted my computer, but as i was restarting, the words that come out as you restart a computer began to seem messed up as well. my desktop after this restart seemed fine, but then again, the lines appeared on only my desktop icons this time.
I would appreciate any help and information, thank you.