What are your complete system specs? How much RAM do you have installed? What version of Vista are your using (32-bit or 64-bit)?
Vista 64. 6GB DDR3.
OCZ 1600 DDR3 6GB RAM (Board's orig. settings were 1066; 1.5V, I manually put it up to 1600, 1.64V)
WD 1TB HDD
OCz 60GB SSD
EVGA GTX 275
Dark Knight CPU Cooler
ASuS My-Cinema PHC3-100 TV Tuner
2x Samsung DVD Burners, and 1x LG Blu-Ray Drive
Intel Core i7 920 (NOT OC'd)