Something I want to share that was driving me nuts until I figured it out. Whenever you use the NV control panel to OC you gfx card and when you save the settings, it prompts whether to apply the settings whenever windows starts, after you close the control panel.When you say yes, it also saves all of your other settings too(like FSB, memory timings all that stuff). So when you modify your FSB or timings in the BIOS and when you boot into windows to see that you BIOS settings are taking effect, you know who the culprit is(The stupid NV control panel reverts back to your previous saved settings through the drivers). It took me half an hour of scratching my head and going bonkers to figure it out. I got so frustrated that I was about to format and reinstall XP, lol. Silly me.