Abit KN9-SLI Motherboard "an7 uguru" Questions

AN7 MAINBOARD HANGS @ POST CODE 90 STARTS FROM: 0.0. THEN 8.3. THEN HANGS @ 9.0. "Complete uGuru intitial process AWARD BIOS take over booting job" and then anything else happens please help I had the

...AN7 motherboard, and all was going well until I had almost finished. Suddenly it would not boot, and gave an undocumented POST code of AF. I tried the usual reset CMOS/unplug power to ...