I ran your testing method and the psu does appear to be the problem in my system. However, I have no experience in psu's and would like to know what to look for in buying one (brand, wattage, ect.) I would also like to know if there would be any ill effects in buying a psu that has more wattage than for the needed system because I plan to upgrade when I get the money, and it would eliminate one thing I need if possible.
All good PSUs have internal regulation systems and induction coils that make it almost impossible to fry your internal components in the event of a PSU failure unless, of course, it is the effect of a large power surge. Your PC should be fine other than the PSU.
Your power supply can never have too much wattage; that's not the way wattage works. Your system will take only what it needs, and the supply will regulate that. The wattage is really more of a measure of what kind of draw your supply can handle. To be safe, a 400 or 450 watt PSU would be good for you, especially if you ever want to upgrade that graphics card of yours.
Here are some good PSUs (Though make sure your PC takes regular ATX PSUs.):http://www.newegg.co...N82E16817139003
-And these babies are just bad@$$.
If you plan to go with a DX10 video card, faster CPU, more hard drives, etc, you will probably want to go with a 600+ watt PSU. Those new GPUs and AMD CPUs pull a lot of juice.