Motherboard 24pin power failure

[CactusJoe]

Hello

Im using the ga-ma74gm-s2 motherboard from gigabyte.

I reveived it, brand new, three days ago. I installed it, set the cpu/memory/hdd/dvd, well everything inside a brand new case. It booted right, I installed windows xp sp3 w/o any inconveniences. Then, I just let it run for some time and it has shut down by itself.

When I was pressing the power button, nothing was working, it wasnt even lighting up.

So if figured I might of blown the crappy stock psu I had, making the whole system shut down. I changed the psu for a brand new one and the cpu was still not booting.

Then I tought it could have been the processor, who knows... maybe! If it was anything else, the cpu would still start.

So, i changed the cpu for a brand new one (lucky me i had every parts twice) and it still didnt boot.

Then, while trying to uninstall the motherboard from the computer and try it in another case, i saw the fan staring to spin. When I plug the 24pins main power, the computer dosnt start but when its not completely plugged it, well placed somehow a little oblical, it does start.

Im kinda lost... the problem would be the 24pin?

How can I fix it? I should i RMA it ?

thanks, and very sorry for my bad english im back from work and i need to go to my other job in 20seconds.
thanks!!

[3.0charlie]

Did you plug on the secondary 4-pin connector? And double-check every wire going into the 24-pin connector, making sure they are not loose.

[CactusJoe]

Double checked, its still the same thing.

The connection only boots and everything works when the plug is "oblical" and not when fully plugged in...

[3.0charlie]

You mean at an angle, not fully seated?

Disassemble the computer, and re-assemble on a cardboard sheet. Looks like the board is grounded somewhere. Double-check the case once the board is out for any metal parts that could come in contact with the board.

[CactusJoe]

I've taken the board out of the case for testing purposes... So theres no metal connection anywhere

and I mean at an angle and not fully seated, so both

[3.0charlie]

Bad connection then on the board's 24-pin connector. Time for RMA - unless someone else has an idea.

Word of advise, RMA the board quickly through the store where you bought it, since the Gigabyte RMA process is very long... been there, done that.

[CactusJoe]

Alright!
Thanks for the help

[Exmortis]

If you have not RMA'd it and you have a 20+4 pin power, try it with just 20pin, they will usually boot with jkust 20pins. My bet is your VRM set is bad, if it boots, then you have an issue with the VRM ont he extra 4pins. Still an RMA but would offer some peace of mind you did not do anything wrong, and it is a MOBO issue.