Computer Help

[jcmuff]

Building a computer but have a little problem.

Have a Shuttle AN35 Ultra Mobo (NF2 ultra)
Athlon (2500, 333)
2 512 sticks of corsair ram
9500 radeon
antec SX630 II

Now here's the problem. I just have proc, ram, hd, vid card in. When I plug in the power directly to the vid card (has this thing where you have to plug in an external power not just the agp) my comp doesn't even turn on. When I unplug that, the computer starts, but my computer gives off a repeating quick beeps and the screen is garbled? The PS is 300 watts and I don't think just these few things should be too much for it? What can I do?

2 things:
I know the ram is good (put it in another machine, fine)
I know the vid card is good

 

[hominid skull]

The firstthing i'd try is another power supply, a higher output/better quality power supply of 350W and above should do it.

If you have an old Gforce2 or similar, try putting that in just to check.