I know my old D865 motherboard (9-10 yrs), with a Radeon 850 AGP and down to 1 GB MB (lost half my slots a while back). Do Video cards die out slowly?? After a few hours, I lose 'words'. Think of Task Mgr and along the top row, I lose File, Options, View, etc. On the desktop, some icons are missing, some labels are black or missing. Doubt this is a heat problem. Thinking lack of Memory or Video problem. If you think it is MB related, will get more MB. Resitted the video card. reboot clears everything up. XP Pro. ideas???