Epox have released a New BIOS for their 8K7A and 8K7A+ motherboards.

Bugs Fixes
Fixed boot up issue with Adaptec 29160 SCSI and HPT370.
Modified K7 desktop CPU string for CPUID 66x.
Added support for Athlon 4 SSE function.*
Added PCI Latency Timer selection to BIOS.
So warp over to Epox

No guarantee of Athlon 4 processor support alone.Check our CPU support list for recommended processors.