I just swapped out an AMD slot A 500mhz CPU to an AMD slot A Thunderbird 700mhz CPU. I have a SOYO K7VIA 133 motherboard. According to SOYO's site, the CPU will work wiht the motherboard, and the bios info shows the change. But Windows 2000 will not run. Any ideas as to why? I can't even re-install Windows, the setup program also locks up.