I thought my relatively new 3870 was going bad, and I posted in another forum, someone said it might just be Vista as I was only getting artifacts in Vista and not during a post.  And it would sometime work and sometimes not.  Various BSOD's would talk of Page faults or IRQL's, Memory management, and even NFTS. I will try to check my Memory with Memtest 86+ and if that passes I might try a new had drive.  I already am using a X1800 XT so I have a reasonable expectation it is not the Video card.  I hate doing a new install....
 
MSI K9A2 Platinum, 4 Gig (2 X 2) AData PC6400, MSI HD 3870, Sata DVD drive, floppy, IDE Seagate 500 Gig HDD, Vista 64 Ultimate. No other add-in cards.
				
			MSI K9A2 Platinum, 4 Gig (2 X 2) AData PC6400, MSI HD 3870, Sata DVD drive, floppy, IDE Seagate 500 Gig HDD, Vista 64 Ultimate. No other add-in cards.