Boot up - shut down - boot up after power loss

[deuter]

I have E6750 CPU and MSI P35 Platinum motherboard. When I try to boot up the machine after the motherboard loses the power (ie, the power supplier switches to off), the machine will boot up for 2 seconds, then automatically shut down for 2 seconds, and then boot up again normally. Has anyone seen this before? I heard that this is to work around some CPU problem, otherwise the system may have some kind of S5 reset issue. What are the details for this issue?

 

[Mousemonkey]

My Abit IP35 does exactly the same from a cold boot or after any BIOS adjustments.