Time to troubleshoot my computer

I already asked this in a previous post, but the remedy didn't work. A while back, I Installed my Radeon 32mb DDR and installed the 3075 drivers. At bootup, my Biostar M6TBA motherboard recognized it as a 772mhz processor (originally 750). I checked SiSoft Sandra CPUFSB, they both said the FSB was 103mhz. After a few failed attempts to change the fsb in CPUFSB, I realized that the fsb was locked. When I took out the Radeon and reinstalled my old Matrox, the fsb was back to 100 and I could change it in CPUFSB. Any ideas what I should do?

Check to make sure all your AGP settings are right in the bios. Use only the ATi supported drivers. If that doesn't work, exchange the Radeon for a new one and see if it still does that.