I have a Gigabyte 965P-DS3 rev 3.3 motherboard, a 6420 core 2 Duo CPU, an ocz high performance ddr2 2 gig dual channel kit, and two maxtor 500 gig 16mb cache sata hard drives. For 6-7 months I have had the motherboard, CPU, memory, and one HDD overclocked on windows XP 32bit to 3.1 ghz from 2.13 stock. I then decided to set up a raid drive and got the second hard drive, and I installed a fresh windows Vista Buisness 64 bit OS. After I installed these the overclock had automatically been reduced to stock. I went into the bios and tried to reset it to what it was but it just tries to boot once, fails, then reverts to stock. I have tried my original 387mhz, 390mhz, 333mhz, 320mhz, 300mhz, and the last one was so close to stock that I can't even remember. stock is 267mhz. I also tried easytune5 for the hell of it but that didnt work either. I also was adjusting voltages and such so i dont think that was the issue. I am wondering what change affected this or how to re-overclock because it just reverts to the stock. Thanks in advance for any help.