power issue... currently out of ideas

NDSUTopGun

New Member
My desktop system seems to be acting like there is an electrical short somewhere. The system powers on for a split second before shutting off, and that only occurs after the power switch on the power supply has been turned "off" until the power is drained from the motherboard (board LED status light goes out) and then is turned back to the "on" position.

Here's the background of this situation. On April 23 (of 2011, for all intents and purposes) when I was performing a normal shut down, I noticed that my computer hardware would continue to run even though the operating system would be shut down. My system would not respond to the classic "press and hold to immediately shut down" power button method, and had to toggle the power switch on the power supply to shut it down.

Originally, I considered this to be an issue with my motherboard, an ASUS P6T SE model at the time. I sent it in for warranty and acquired an EVGA X58 FTW3 in the process. That EVGA motherboard was put in on May 5 and it operated just fine, or so I assumed. Two weeks later on May 14, the same thing happened: system failed to shut down. It operated just fine for two weeks and it suffered the same failure. Then I decided that this had to be a problem with the power supply. Long story short, no improvements. Same issue as what was described earlier in this post. After that, I tried using my ASUS motherboard, having it just back from warranty service, to see if it would work. Nothing.

I never did hear back from ASUS about what actually was wrong with my motherboard. All they could tell me was that it was not repairable and thus simply replaced. No details. I consider the fact that I probably sent them a motherboard that had nothing wrong with it.

I could not find any physical damage on my six sticks of RAM nor my CPU that may have caused an electrical short. Call me a lunatic but I get the feeling that my computer case (perhaps the power switch on it?) could be the culprit all along.

If anyone has any tips or advice to give, I would be absolutely grateful. I'm at a loss here... out of ideas. It has stumped me as well as all my fellow counterparts. My dad, in all his infinite humor, suggests that a good 40-lb sledge hammer would do the trick. However, I'm still hanging on by a thread of hope that this issue could be resolved.
 
ALWAYS listen to your Dad :D

Failing that, have you tried taking a stick of RAM out at a time. See if that has any effect. Possible HDD failing.

Sounds like the MBoard wasnt/isnt the problem.
 
I seem to have tested those RAM sticks again and again... but always worth one more diligent shot. Most of the time I've been diagnosing the issue without any HDDs attached so I'm unsure about hard drives failing on me in this instance.

Probably one of the biggest headaches that I'm dealing with is the fact that it operated just fine for two weeks with that new EVGA board and then the problem reoccurred. But now when I switched out the EVGA for that other ASUS board, it didn't work at all.
 
I would have the HDD attached while testing, swapping out to a second drive to determine that isnt the cause.

As you have said the HDD hasnt "been in the loop" while testing, my 1 penny (cent) is on the HDD dying.

Get a backup done.
 
I'll give it a shot. Thank you, "Gary"

Any hard drive disk would do? I run a RAID 1 configuration and I wonder if my computer wouldn't take it very well due to not being able to find the RAID disks.
 
Did you check the wires going from your switch to the connector on your motherboard? maybe its gone out or bad? IDK what type of motherboard but i beleive it would connect at the bottom right part of your board
 
lol yes I've been playing around with the idea that my power switch may be bad. idk how to test it though. all the wiring that runs from my board to the outside of the case (power switch, reset switch, power for fans, USB, eSATA, audio, etc) are all in good shape.

@GaryCantley: your idea with the hard drive didn't fly. :( at least we tried.
 
Im not sure, maybe test it all in a diff case, or at least the switch, the wires may be good, but nothings to say the short wasnt in the switch
 
a different case... something that I haven't got a spare one of... although I have been considering getting a new case anyways...
 
Just unhook the power switch from the board. Ground the two pins together on the board with a small screwdriver (or a jumper). See if it boots.
 
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my complements on the interesting tactic. however, that didn't work either. the power flickered on for a split second, just like before. at least we can eliminate that factor. thanks guys.
 
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