On and off

[BlancoNino]

My friend peiced together a new computer and there were some broken parts, so he shipped them back and put his old hardware back into his case and fired up. The power goes on for 1 second and then immediatley shuts off.

We tried different power supplies, different CPUs, different video cards, different ram, and a lot of configurations and re-doing everything.

Any suggestions?

 

[xit2nowhere]

Are you guys using any good UPS unit ? Might be a power fluctuations in your grid.

 

[xit2nowhere]

Also, when it shuts down, does it make any beep? Might be that heat sink is not making a good contact with the cpu.

 

[BlancoNino]

Hooked the PC Speaker up correctly (even tried another) and there are no beeps. Tried different outlets, different UPS units (like the one I"m using now), and the other computer in the house works fine. It seems like I've had this problem before...but I can't remember what the cause of it was.

 

[xit2nowhere]

Damn man, what are you doing up so late/early ?

 

[xit2nowhere]

It's almost 3am here in SoCal.

 

[xit2nowhere]

Also, since you guys have a couple of systems, you could try testing his original parts one by one in other systems.
Also, when you assemble the system, have only cpu, gfx card, hdd, one stick of ram, mouse and keyboard plugged in. See if that happens again.

 

[xit2nowhere]

If nothing else works, check your mobo. Perhaps some tiny part broke off or something. Try to test motherboard with parts that you know are in good working condition. If it does not help, RMA motherboard, if it's not too late.

Best regards...

 

[BlancoNino]

Fixed. I guess his motherboard wasn't grounding correctly or something. Odd.

 

[xit2nowhere]

How did you guys fix it? What did you do?

 

[BlancoNino]

We loosened up the screws in the motherboard. I guess they were too tight.

 

[xit2nowhere]

LOL, and that's it ?!! :laugh:

:beer: for you guys

 

[xit2nowhere]

Hmm, kind of strange though. Was it prolly a short circut there somewhere then ?

 

[BlancoNino]

I really have no idea. Motherboards tend to be picky about where they are situated. I am guessing there was a short somewhere because we weren't even making it to bios.