Computer won't start up at all

[Peacekeeper]

Just double checking, did you remember to connect the 4/8 pin CPU Aux power? The +4 on the main ATX shouldn't matter much.

Yeh, I made sure to plug in the 4pin one too.

 

[JrRacinFan]

OK, now try the 500W PSU if you can.

 

[Dacur]

well according to CM site http://www.coolermaster.com/product.php?product_id=6643 the 8 pin cpu should fit perfectly. (checked with a mobo screeny). Or wrong cable was supplied with psu.

Seems like a improper cpu install to me. Or bent pins on cpu. Cpu socketlock broken

 

[jsfitz54]

Do either of the test psu's have a 24pin Main supply?

If yes, use that.

Seems like a improper cpu install to me. Or bent pins on cpu. Cpu socketlock broken

The computer was running yesterday fine. The OP installed 32bit OS by mistake and while loading 64bit version machine crashed and won't restart.

Not saying cpu is not problem but cpu will be last to look at.


If an old rig is intact, Try the new PSU in that rig.

Do you know how to use a multimeter? Do you have one?

 

[TheMailMan78]

If an old rig is intact, Try the new PSU in that rig.

I would try the paper clip test first.

 

[Peacekeeper]

I've tried all different combinations on several PSUs now and all with a same result. I'm pretty sure it's not the PSU. Most likely it's the CPU, even so I'm not entirely sure how to deal with that as it was working find until I tried to reinstall the new OS earlier.

well according to CM site http://www.coolermaster.com/product.php?product_id=6643 the 8 pin cpu should fit perfectly. (checked with a mobo screeny). Or wrong cable was supplied with psu.

The cable is built into the box, I doubt it's a manufacturing error unless it's on a larger scale than just mine, though just in case I took some more photos =D

Motherboard socket


Note that this one would be flipped horizontally upside-down:

4+4pins


EDIT: Unfortunately the old rig isn't intact as I had to steal all the screws from it for the motherboard as well as the SATA cables.

The 375W PSU has a 24pin power supply plug.


My dad has a multimeter and would know how to use it if I told him what for.

 

[jsfitz54]

I would try the paper clip test first.

Where is a link for the OP to show how to test PSU, paperclip method. I know there have been several here on TPU. Trying to locate.

http://forum.corsair.com/v3/showthread.php?t=63991

 

[TheMailMan78]

Where is a link for the OP to show how to test PSU, paperclip method. I know there have been several here on TPU. Trying to locate.

http://forum.corsair.com/v3/showthread.php?t=63991

Heres a video

http://www.youtube.com/watch?v=khpnx21oydg

 

[Peacekeeper]

Thank you for both the instructional links and the video. I'm going to get some dinner and then test it and make sure to get back to you guys with the results =]

 

[Peacekeeper]

Apologese for double post. Tested my PSU and it works - tried the paper clip idea as well as the multimeter.

Is there any definitive way, other that buying replacements for everything, to determine whethert the motherboard, RAM or CPU may be the culprit?

 

[TheMailMan78]

Apologese for double post. Tested my PSU and it works - tried the paper clip idea as well as the multimeter.

Is there any definitive way, other that buying replacements for everything, to determine whethert the motherboard, RAM or CPU may be the culprit?

I'm gonna go on a limb and say its your mobo. You cant test any of it without another compatible computer. Do you have another computer you can test the RAM in?

 

[jsfitz54]

Take motherboard out of case and set on non-conductive surface (heavy cardboard or wood) and try to boot it.

That's going to take the case and accidental grounding out of the equation.

Once it's out then you can move on to inspecting cpu, motherboard. Unfortunately your going to have to strip it down.


Sorry you are having such a hard first time. Just go slowly and don't rush things. Walk away if you are frustrated and come back later.