okay, you may have flashed the bios incorrectly or with the wrong bios, after doing some checking on the info it reported to PC Wizard.
ftp://ftp.evga.com/bios/N801%20Update%201.2.zip
"# Download the appropriate update above, and extract files to a location on disk
# Completely remove NVIDIA display driver from Add/Remove programs
# Restart PC
# Make sure no programs are running in the background, and double click update.exe from the extracted .zip file
# Press ?Y? to begin flash
# After flash restart PC
# Reinstall the 169.28 or later graphics driver"
that's the BIOS for the 8800 GT only, from EVGA.
ftp://ftp.evga.com/bios/N801%20Update%201.2.zip
"# Download the appropriate update above, and extract files to a location on disk
# Completely remove NVIDIA display driver from Add/Remove programs
# Restart PC
# Make sure no programs are running in the background, and double click update.exe from the extracted .zip file
# Press ?Y? to begin flash
# After flash restart PC
# Reinstall the 169.28 or later graphics driver"
that's the BIOS for the 8800 GT only, from EVGA.