i had complately the same thing last week,i tried everything whatever i could find.
today i get the post screen,how?
i found that while trying bios recovery
first clear cmos like svet said,
then i left all ide sata parts only my gpu staying on my board then,..
i have these rams
2gb buffalo ddr2 800
1gb axega ddr2 800
first i left buffalo and restarted pc,no post no bip
changed ram to other slot,no post no bip
then left that ram and put the other 2gb and post screen came
then i flashed bios manually again
it wrote the same thing like 1st time
i get these 2 different msgs,i wasnt get them before
HDCP: output msg Rom Hole Protect!
CMOS checksum destroyed
and when i restart pc i get this error:
-CMOS Checksum Bad
i go in bios setup with f1 and set optimized defaults and do other settings what i use
i cant use my 1gb ram now
i installed xp and i will try the 1.3 bios rom now
note:i think the problem is new ami flasher ,because there was another flasher in old versions 'afud412'
but with 1.4 coming a new flasher 'afud4281',
i dont know where to report that
(sry for my bad english)