System is dead. Please Help

dwalden · Rated PG-13 Joined: 17 May 2006 Posts: 35

I built a new machine last year:

CPU: AMD Athlon 64 X2 4400+
MOBO: ASUS A8N32-SLI Deluxe
RAM: OCZ Platinum 2GB DDR SDRAM DDR 400 (PC 3200)
GFX: EVGA GeForce 7900GT 256MB Signature Series
PSU: ENERMAX Liberty ELT500AWT 500W
CASE: Antec P180B

One night I shut it down and everything was working just fine. The next day, I press the power button and NOTHING. Just completely dead. When I looked in the case, the LED on the MOBO was still on. I went to see if it was just the power switch so I jumped the two pins on the MOBO and still nothing. So I take the whole PSU out and jump it with a paperclip and it starts up just fine.

So, any ideas? I'm thinking is almost has to be the MOBO or CPU.

FYI - There was no storms or power surges to my knowledge the night this happened.[B]

Blue|Fusion · Posted: Mon, 16 Apr 2007 11:48:11 Post Subject:

This happens to me every once in a while, except when it happens to me the system is on and running fine, then just powers off all of a sudden. Pressing power button does nothing. Mobo LED is on. I just switch the power on the PSU off, switch it back on after a few seconds, give it a moment, press the main power button, and off we go again.

dadx2mj · Posted: Mon, 16 Apr 2007 13:12:10 Post Subject:

My first guess would be mobo followed by CPU. I would try clearing the CMOS and reseating everything such as the CPU, ram, and video card before I changed out the mobo though

dwalden · Rated PG-13 Joined: 17 May 2006 Posts: 35

dadx2mj · Posted: Mon, 16 Apr 2007 13:31:03 Post Subject:

T-shirt · Posted: Mon, 16 Apr 2007 18:20:27 Post Subject:

I'd be looking very carfully for a short ( dust buuny, loose wire,, that lost screww, etc)
It sounds like the PSU CB cut out due to some sort of overload (it resets when switch off/unplug the PSU) so that now works.
take everything out of the case, then replace the MB (check it over for burn marks, etc) and the PSU, try to start, if fan spins briefly add the CPU and fan, and so on.
if PSU and MB does nothing, MB is likely dead and it's time to RMA,replace or upgrade.

LaTech · Posted: Mon, 16 Apr 2007 22:51:48 Post Subject:

Unplug the power supply from the wall, press the power button and then plug it back in and try again.

dwalden · Rated PG-13 Joined: 17 May 2006 Posts: 35

Ok, I tried all that again and still nothing. Now the mobo is on it's way for a warranty exchange. If this doesn't fix it, I'm gonna cry.