It started a week ago, when I power ON the computer in the morning it automatically powers down after 1.5 sec (without any on-screen activity), after some troubleshooting I figured out that if I disconnect the power from the DVD-ROM or any of the HDDs it boots but it complains that the computer is over-clocked incorrectly (I did not touch the over-clocking options), it gives me the options to continue (F1) or reset the over-clocking to default (F2). So what I do is press (F2), and shut down right before it loads windows, I re-connect the power to the HDDs or DVD-Rom and it successfully loads windows.
Yesterday windows complained that I changed the hardware significantly enough to have my MS Windows CD-Key expired, or disabled, it asks me to re-activate my windows with another key, also when I do some functions in some games the computer gives up and just powers off. (It all started a week ago, I did not have any problems at all before then)
I wonder, do I have a Mobo problem or a PSU problem… AsusProbe doesn’t report any problem, PSU voltages are OK, CPU doesn’t over-heat, no hints what-so-ever.
I would highly appreciate any coherent opinions you guys might have before I proceed with the next troubleshooting step (which is buy a new PSU or a new Mobo).
Your power supply is too weak to supply enough voltage during cold bootup. I had the exact same problem with another asus board, and changing the ps fixed it. I suggest sparkle (fortron), antec, or enermax in 450-550 watt range.