Hmm, ok. So it's booting up, and the monitor is getting a video signal, but it freezes/dies after 10-15 seconds?
- Video card is working. If it wasn't, you wouldn't get a video signal.
- Memory is inserted properly. If it wasn't, you wouldn't get a video signal and it'd beep at you. Repeatedly.
I would suspect the powersupply first. What brand is it? Enermax, or some other brand? Try swapping it out and using another PSU (from your old comp... if it's less than 300w forget it, otherwise take out unnecessary cards and see if the old PSU fixes the prob).
If all else fails...
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