Hello-lot of software glitches w win xp sp 2. I received an error message after hungup applications: IRQL-not less-or equal, with advice to disable bios memory, caching/shadowing. I have entered setup on my dell 8300 dimension many times and can't find a way to adjust these settings--there's no listing for advanced bios options or caching...Any ideas anyone? My Itunes won't run, computer won't run anything in the cd drives, sometimes the clock stops, outlook often freezes...otherwise everything's rosy. I removed recent software--cubase. But int exp 7 doesn't work either. Help!! Thanks