Hi, I'm hoping someone can point me in the right direction here, 'cause I'm stumped. I'm setting up a second XP Pro SP2 installation. I'm doing this so I can troubleshoot the game Oblivion, which has forced me to reinstall XP twice already. I also use my PC for my work, so it's been a hassle! What Oblivion was doing is sometimes it slowed down disk operations to unusably slow levels. It'd hang, then even after rebooting XP was exremely slow and I had to use System Restore from Safe Mode to get back to normal speeds. Then eventually System Restore wouldn't work, so I had to reinstall. It seems to be disk operations that are the problem as it becomes very slow when opening programs, opening new folders in Explorer, and when I try to copy a file of any size it has bursts of almost normal speeds, then stops for long periods. I've set up a new second XP installation, but I've found that this one is getting the same problems when I just try to install the drivers & updates, nothing to do with Oblivion. It's not happening when installing any program or driver in particular as far as I can tell, it seems random. My original installation is still working fine. I've tried deleting and reinstalling the second installation, but keep getting the same problem. Some specs: Motherboard: Gigabyte GA-965P-S3 CPU: Intel Core2 Duo 6400 2.13GHz Video: WinFast PX7900 GT w/ForceWare 94.24 Audio: RealTek HD Audio HDD: 2 x 320GB Seagate Barracuda 7200 SATA ST3320620AS Monitor: BenQ FP202W DVD Drives: 2 x Pioneer DVD-RW DVR-111D SCSI I've configured the HDDs like this: First physical drive C: Original WinXP install E: Documents F: Software Archive, 2nd WinXP install (including it's Program Files & Documents & Settings) Second physical drive D: Games G: Installed Programs (for 1st WinXP install) H: Media So I don't believe it's a HDD problem, as both XP installations are on the same physical drive. I've tried updating the drivers for: BIOS Chipset Monitor Network Card HD Audio Video DVD Drives DirectX but as I mentioned, sometimes I haven't even been able to finish doing this. I've defragged and chkdsk'd every drive before reinstalling. If anyone can suggest what to try next, I'd be grateful.