Edit: stoned on benedryl, sorry. So, it sounds like it's the motherboard's 24 pin making crappy contact then. Man that is weird. Can you wiggle any pins of the motherboard within the housing? Cold solder joint possibly?

 

dont wiggle it

 

Quote:

Originally Posted by Lazloisdavrock

dont wiggle it

LoL Laz did the same thing I did. Thought It read, "when I wiggle the 24 pin connector with the computer on, it shuts off"

 

It won't turn on if it I don't wiggle it and hold it in place. With the original PSU, wiggling has no effect.

Actually, the first few times with both power supplies, I got it to turn on for a few seconds (only sometimes it would post). And with the second power supply, I got it to post and run windows for a few minutes until it shut down sporadically.

It looks like these ASUS motherboards have this "EPU" power management deal.

 

Got a soldering iron? Fix the cold joint on the motherboard. Thanks

 

If it's the motherboard and it's still under warranty, rma it.
If it's the motherboard and it's not under warranty... you might be able to get it repaired, but I wasn't able to find any literature about replacing the connector that's located on the motherboard, but I bet somebody could do it.

If it's the power supply and it's still under warranty, rma it.
I doubt it's the power supply connector end, but if it is, and you have basic sleeving tools, (molex tool, heat shrink, lighter/heatgun) you should be able to safely take the connector off and see what the problem is. You can also order replacement pins and crimping tools from performance pcs or frozen cpu if you need to fix it..

 

Definitely don't plug in any mechanical hdd's while troubleshooting this. Sure sounds like the pwr pins on the motherboard need a reflow, but hard to say without seeing it.

 

I'm terrible at soldering. And all the connectors feel solid on the motherboard. RMA it is. Thanks for the input.

 

Check the contacts on the 24pin plug from your PSU. If one of the contacts get loose it can cause this to happen. Look at the contact side of your 24 pin plug, if there are any of the connectors that look to be spread apart more than others get a small screwdriver and push them closed.

I had this same thing happen with a PSU. I had been using a piece of short wire to ground the green and one of the black wires on the 24 pin to turn the PSU on without having it hooked up. After turning it on/off a few times like this the contacts spread open some from having the wire shoved inside there. The next time I hooked the PSU up to a MB it was doing exactly what you are describing because the 2 connectors I grounded so that I could test the PSU were not making good contact.

 

Quote:

Originally Posted by version2

I'm terrible at soldering. And all the connectors feel solid on the motherboard. RMA it is. Thanks for the input.

Probably the best idea, provided that you get proper rma service. Good luck!