Abit NF7-s V2 boot probs

[9zap]

Hi there

Slight boot prob with the nf7-s v2 when you power up its starts the cpu fan and stops soon as you let go of the power button, board has lit up etc powers up spins down within a second it wont post any ideas?> feels like a jumper is wrong way round or something silly..its been sat here in abox for months just thought i would test it before passing it on worked fine last time i am sure

 

[evil.jelly]

Are you sure the cmos jumper is the correct way around.. i know the nf7s2 manual showed the cmos jumper to be one way around, but on further digging on the net it turned out to in fact be a slightly different version to the one in the manual and it was the other way around than printed?