Is this PSU too weak?

[toymachineman19]

I took my hardware, except for the motherboard, out of my dell. So I now have an ASUS P4P800 motherboard, 2.8Ghz Pentium 4, 512MB of RAM (2*256), and a 40GB Hard Drive, and 3 fans. Is my 300W dell PSU too weak? it's an ATX PSU, and puts out 16A on the +12V rail, this PSU is from a dell 4600. Should I buy a stronger PSU? It seems that it is unstable, as I sometimes will get random shutdowns, and it won't install windows, or it will hang. Thanks. I checked temps also, they're at 45 idle.

 

[davidhammock200]

I'm confused, what are you going to power?

Cheap, but Good PSU's: http://www.hardforum.com/showpost.php?p=1027898523&postcount=7

 

[toymachineman19]

nevermind, I found the problem.