I have a relatively new PC running XP Professional with SP2 after removing Vista Home Premium about a year ago. For the past several weeks I have had a strange thing happen to the hard drive boot sequence. I have three SATA drives, and boot from the first. But now the sequence in the BIOS has changed by itself or some unknown cause about once a week. The motherboard is a Gigabyte S-series. When I find the wrong disk is attempting to boot and failing I reboot and reset the BIOS to the correct sequence again. I run Trend Internet Security Pro's antivirus and use anti-spyware software and Diskeeper defragmentation. But, I wonder whether I might have some kind of spyware or rootkit resetting the HD sequence. Otherwise, what can be causing this?
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