Hi all, hope you can help me diagnose a problem I'm having. I've had my 18000XT since last September, and it's given me no real problems (except for occasionally not allowing my PC to start properly) until recently. I'm now getting artifacting in games, and/or lock-ups/crashes that sometimes freeze the system completely, or sometimes allow the VPU recover thing to recover so it's usable again. I get the same issue if I try doing a scan for artifacts using ATi Tool or ATi Tray Tools. Both their artifacts tests show artifacts. I'm struggling to figure out why this would be because it's caused me no problems until recently, and I have no problems in general day-to-day usage, only games. A few months back I changed CPU and so also flashed my BIOS, and then shortly after that, re-installed Windows. Would any of these events have triggered this problem? I've tried a few different driver versions (I'm using non-CCC drivers, for what it's worth) and I'm still getting this issue. Specs are: AMD Athlon64 X2 4600 Abit AN8-SLI Fatal1ty Radeon X1800XT 256MB PCIe 2GB of Corsair XMS RAM I'll have Vista soon (next week) so I'll hopefully be able to see if this problem is reproduced there. My money is on either the card itslef failing (which seems unlikely), or a conflict between the card and the new BIOS. The latter would annoy me because this'd now be the second time that I've had a graphics card and motherboard conflict (this was a couple of years ago). *sigh* Why can't computers just work? Thanks for any help in sorting this.