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odd system issues, PSU/MB/RAM/CPU?

D

dark2099

n00b
Joined
Jan 16, 2009
Messages
5
So trying to figure out what is causing issues on my PC and I'm stumped. Couple weeks ago I noticed that Win wasn't reading memory right, and then my whole rig just stopped working. A friend lent me a diff CPU to try since I had thought my CPU was the cause. Didn't fix it. Now I have a new motherboard and the PC will power on for about 1 second, then right off again. My old mother board was a ASUS Sabertooth 55i with latest bios, new one is Gigabyte P55A UD4P. CPU I have is i7 875K and the friend lent me a i3 530. Tried out 2 PSUs, one being my Enermax Revolution 1050w and a cheap Xion 500w that I pulled from an old rig. I have tried disconnecting the power (but not removing from the system) from my 5850, no power going to anything but MB and CPU, with no mouse or keyboard attached, nor any HDDS. The only component I haven't swapped out is Ram which is 2x2GB G.Skill PI 2300MHz. Can't think of what else to do, or anything for that matter. Thanks.

EDIT: I've tried each stick of ram individually in each slot, no change. The GB board is brand new, just got it today, so that's at default BIOS settings, I had reset the BIOS on the ASUS so shouldn't have been that on there either.
 
reminds me of an old PC I built. Nothing worked. I RMA'd each part one by one. I was so stumped. I thought I was doing something wrong. It turned out to be the damn power cord. the simple black cord from psu to wall. I was so thrown back. it was sad.

moral of the story. is there something simple that is contaminating the build? Have you tried another power socket? swapped cords? with the new board, are you missing a jumper setting? different cpu's could require different settings (i know nothing of either board you were using, just throwing that out there). good luck.
 
SticKx911 said:
reminds me of an old PC I built. Nothing worked. I RMA'd each part one by one. I was so stumped. I thought I was doing something wrong. It turned out to be the damn power cord. the simple black cord from psu to wall. I was so thrown back. it was sad.

moral of the story. is there something simple that is contaminating the build? Have you tried another power socket? swapped cords? with the new board, are you missing a jumper setting? different cpu's could require different settings (i know nothing of either board you were using, just throwing that out there). good luck.
Click to expand...

Tried just about all of that, on board is brand new, so never been booted before having received it so shouldn't need a change or anything like that. Tried pulling the system out of a case in case of a short in there.
 
could be both sticks of ram. does that board have on board video you could use to take out the pcie card entirely and see if that's a cause?
 
SticKx911 said:
could be both sticks of ram. does that board have on board video you could use to take out the pcie card entirely and see if that's a cause?
Click to expand...

I've tried booting the GB board with out vid or RAM installed and still same issues.
 
If you're friend is willing to loan you a CPU, would he/she also be willing to loan you a known working machine that you can swap parts one-at-a-time to see which item(s) from your build do not function in the known working rig?
 
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