I found and disabled the legacy support option. I could not find the 64/60 option. It worked when I restarted but not when I turned the cpu off and powered up later.

I have searched the asus site and can't find my specfic model number. I find my series, but not my mothernoard exactly.

CPU: 1200 megahertz AMD Athlon Thunderbird
Board: Asus A7V-VM 1.02
BIOS: Phoenix Technologies LTD 2.04 12/07/00
I am positive that this a bios problem.
Any ideas?