Help, power supply just flashes

[tigergriz]

I just put together a new mobo prcesser power supply combo see below order
my problem is the power supply does not even come up to speed it just briefly flashes the lights on the frontof the case but so fast the fan dosnt even spin, any ideas?

Kingwin 3.5" SATA Internal Hot Swap Rack with RAID-3 Drive Bays (K450-1114) 1

Seagate Barracuda 1.5TB Hard Drive ST31500341AS - 7200RPM, 32MB Cache, SATA-3G (TSD-1500AS)

Corsair 4GB PC6400 800MHz DDR2 Dual Channel Gaming Memory - 2x2048MB (C13-9904)


Ultra X-Wind Socket 2200rpm K8/AM2 Copper CPU Cooling Fan (ULT40032)

Ultra LSP750 750-Watt Power Supply - ATX, SATA-Ready, SLI-Ready, 135mm Fan, Lifetime Warranty (ULT-LSP750) 1

XFX Radeon HD 4670 Video Card - 1GB GDDR2, PCI Express 2.0, CrossFireX Ready, Dual DVI, HDTV, HDMI Support (P450-4670) 1

Biostar TA790GX 128M Motherboard & AMD Phenom X4 9750 Quad Core Processor Bundle (B69-3266)

 

[marcellis22]

Pull the major components out of the case, assemble them on a non-conductive surface and test, it sounds like you may have a ground or power supply problem. If it POSTs and you get video, you have a ground issue in your assembly with the case. No POST and no video, try another power supply...

 

[tigergriz]

Thank you marcellis, i just tried unpluging the power input to the board for the cpu and that didnt work still flashed then I unplugged the power to the main board and now the power does nothing at all now what? please helllllppppp !!!!

 

[JackNaylorPE]

A 750 watt PSU that costs less than $45 is not something I'd be concerned about trusting my components to.

http://www.tigerdirect.com/applications/SearchTools/item-details.asp?EdpNo=3276567&CatId=2533

Thinking the price might be just a great deal, I looked at the 1st 10 pages of a Yahoo search (200 hits) on "Ultra LSP750 review" and could not find one enthusiast review site which published a review on this PSU

 

[tigergriz]

Jack,
I took your advice and spent a lot more money on a power supply I got an 850watt corsair tx850w it cost me $140.00 although I realy dont think that how much I pay for somthing is always directly related to its quality, anyway I put it all together with a replacement mo-board and it still didn't work so I started disconecting things, first the usb's then the floppy then the hard drive I was going to pull the ram last but before I did that I un-plugged the 4 conducter cpu power input from the mo-board and tried it again and she lit so I took a closer look and it could be plugged in in two directions and I had it 180deg off it has 2 rounded pin plugs and 2 square pin plugs across from the opposite at the corners but when I looked closer the latch was only on one side and I had it on the wrong side I am only admitting this so that someone else may benifit from the info I have loaded windows and so far so good.

thanks for the help.