I saw this fruitless thread: https://www.techspot.com/vb/topic24955.html I put together my new system (should show up from my profile), installed WinXP and all the security hotfixes and whatnot from the MS site. I noticed early on that WinXP would periodically and randomly freeze. I installed several games, and they're essentially unplayable, including two games that were bundled with this MSI card, "XIII" and Prince of Persia. The other games that freeze up include Tribes Vengeance, Half-Life 2, and Splinter Cell: Chaos Theory. I haven't tried Halo yet. They generally freeze up during the opening sequence or a minute or two into gameplay. Sometimes it's a simple freeze, other times a blue screen that flashes by before a reboot, and sometimes I've seen a graceful game exit followed by a bug submission dialog window that includes a stacktrace and useful stats, but I can't reliably reproduce that. >sigh< Interestingly, Doom 3 is running like a champ even with the vid settings maxed out. I've read similar threads via google searchers regarding MSI's NX6800GT and "freezing," "stuttering," or just "problems." But, I've not seen any solutions or progress to the problems. I'm getting the feeling that I should return this card and exchange it for the same model from a different vendor (XFX or Gigabyte), or for the comparable ATI card. (I noticed that most of these games sport the ATI logo. hmm....) But I'll give it one more go by stripping my system down to minimum hardware and software and see what happens. Oh, a couple other details... I updated the mobo's BIOS to "F7" (see Gigabyte), and I updated the video card's BIOS. On the driver side of things, I started out with MSI's driver that came with the card. I had the problems above, so I upgraded it to nVidia's 71.89 and still saw problems. I see that they just released a new one, 77.72, so I'll try that and see what happens. Any other suggestions? Things to try, fix, remove, test for, etc? Thanks guys.