Solved: Power supply problem

My brother purchased all of the parts for his new gaming PC separately so that he could bring them to a friend to build it. He built it, and although all of the parts looked to be fitted in correctly and the wiring from the motherboard correctly aswell, but when he put in the power lead to start the PC up the power supply is not turning on even though the switch is on when the power button to the PC is pressed. My friend believes it may be an expected wiring problem that will take some time to spot but does anyone else have any ideas on what might be wrong?

PC Specs:
Motherboard:
Gigabyte GA-G31M-S2L iG31 Socket 775 Onboard VGA 6 channel audio mATX Motherboard

Power Supply:
Extra Value 550W ATX Silent Neon PSU - 12cm Fan/PPFC (no power cord)

Processor:
Intel Core 2 Quad Q6600 Energy Efficient 95W edition Socket 775 (2.40GHz) G0 Stepping L2 8MB Cache OEM Processor

Graphics Card:
Inno3D 9800GTX+ 512MB OverClock Edition DDR3 Dual DVI HDTV Out PCI-E Graphics Card

Hard Drive:
Samsung HD502IJ SpinPoint F1 500GB Hard Drive SATAII 7200rpm 16MB Cache

RAM:
OCZ 4GB (2x2GB) DDR2 800Mhz/PC2-6400 Memory GOLD DUAL CHANNEL Unbuffered CL5(5-5-5-18)

OS:
Microsoft Windows Vista Home Premium -SP1- Licence and media

 

This is, as the title could suggest, a power supply problem. That power supply is CRAP. Massive crap. Why spend 200 $ on CPU, 100 $ on mobo, 70 $ on RAM, 150 $ on Vista, 170 $ on HDD, 200 $ on graphics card AND 30 $ on a power supply.
Idiotic.

Get a better power supply. Examples: http://www.newegg.com/Product/Product.aspx?Item=N82E16817139006 http://www.newegg.com/Product/Product.aspx?Item=N82E16817341010 (pretty much less than minimum recommendation, still 3x better...) http://www.newegg.com/Product/Product.aspx?Item=N82E16817341002

 

Thanks a lot for the reply. My brother said that he was going to hold out until his friend has another look at it, but it you say that the power supply is poor then there's not much he can do.

Thanks again for posting links to recommended power supplies, I appreciate you taking the time to do research.

 

Well, that wasn't a lot of research actually. Those are just power supplies that are good-known, and have enough amperage on the 12 V rail for his setup. (except the 600 W OCZ, it might get a little tight with that PSU, at least get the gamex 700W)