Hi, Got a new rig and once again, things are messing up on iot. Ocasional resets and crash to desktop, but the comp runs fine in windows, only crashes/resets after I start playing games. Just spent £700 on a new comp and its doing the same thing as the old one. Was I really that unluck that I got an Nvidia and an ATi (in the old machine) that had the same problem? Been sat here running prime95 in the background for about 30 mins while surfing net etc, and system is stable and tests have all passed. Cheers, John. opty 148 - stock atm, till probs are sorted leadtek 7800 gt e corsair xms 1gb matched pair antec true pwoer psu 450w raptor 37.6gb hdd could it perhaps be some kind of conflict with the drivers that windows automatically installs on first start up?