I have been hearing multiple beeps at the boot since I built this compter about 2 years ago, it has been working right all that time except...

I have noticed that many times the computer thinks it has been overclocked even though

I have done nothing except install factory parts right out of the box.(ASUS P4P800 deluxe MB).

when it stops the post, it will say: Overclocking faild! I just turn it off and try again and it usually works.

I noticed that the power button would stick on occasionally and maybe be causing some kind of short or improper signal to the board.

With all this said I will tell you that now, the problem is that when I go to power up I get a surge that starts the fans on the processor and on the case and then shuts back down. I then cannot get it to come back on until I hit the power supply off and then back on again.
The same thing happens every time and it will absolutely not power on. The only thing I did was shut down normally last night.


The little green light stays on on the MB however, (until I cut all power), even when I cant get anything else to go. This means that power is going to the board.

I jumpped across the on off switch so it would power on directly from the power supply, but the same thing.

I tried disconnecting everything in card slots and every removable connection including all pwr wires and data to hard drive dvd , and floppy.-took out ram, everything , blew off dust...

what else could I try? I wouldnt think it was a short in a power supply since the pwr seems to be getting to the board.

I have done all I know how to do.
Does anybody have any ideas what it could be?

There are overclocking and voltage settings in your BIOS:

http://dlsvr03.asus.com/pub/ASUS/mb/...800_deluxe.pdf

Section 4.4

That being said I would suspect your PSU. Although there is some power passing to the board that is not an indication that the PSU is doing what it needs to. All your symptoms appear to me as a PSU issue. Do you have another that you can try and test?

I would agree with Jephree on this as a first line of attack. However, if the onboard Voltage regulator is not putting out the right voltage then the Asus Bios may think its being overclocked when in fact the board is failing.

P4P800s bios will autodetect what it needs for the processor (I have one on my server) and if the onboard regulator is working and the processor is not damaged, then it will power up with out an issue (and it will beep several times at bootup)

When I put in the wrong type of processor in the MB for the first time, what you described with the fans spinning for half a second then stopping is what happened. Even to the point of resetting the powersupply due to the circuit breaker popping to stop the PSU from shorting.

If you have a spare PSU, this will help resolve the easy part, but if the spare exhibits the same behavior, its down on the MB.

well, I tried switching the power supply(a 500w) with one that is currently working(a 400w)
and got nothing but the light on the board, not even the little surge I had before.

Replaced the good one into the computer it was in and it is working properly, and now surge doesn't happen on the first one either, so, not much luc k there.

I hope the board isnt bad, but I really dont know how to find out. It has been good till now.