PC won't post but did once..

RDGnome

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Dec 17, 2011
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Hi,
I'm building this system from used parts (risky I know) and I finished the build, powered up and no post. I've tried all the basic things like resitting the cpu and only having one stick of RAM and the cpu and video card in but still nothing. I have also tried booting with an Nvidia card to see if my gpu was the problem. The funny thing is is that after trying rebooting many times, it randomly posted and I managed to get into the BIOS. But my elation was short lived as I've had no such luck after rebooting. Everything powers up fine and there is a green led on the mobo so power isn't an issue.
Any ideas?
Cheers

Part list:
Asus P5N-E SLI (Used)
Intel Dual core 2180 (Used)
1gb Crucial ddr2 ram (Used, I know works)
Corsair CXM 430W (New)
Asus ATI Radeon 6670 (Used, I know works)
Seagate Barracuda 7200.11 1.5tb (Used, I know works)
 

RDGnome

Distinguished
Dec 17, 2011
111
0
18,690


Thanks for the suggestion, but I tried an old Nvidia GT 310 which surely would be supported and as I say, it managed to produce a picture once so why not again?