Yeah, no warning, the whole thing just shuts off. Fans & lights all just stop and I have to turn it back on. I also have another theory: I recently found out that my wireless card doesn't have 64 bit drivers, and I'm running Vista 64 bit. I was wondering if bad drivers could have something to do with it? I know they give me other issues such as outrageously slow internet, but this might be a bit far-fetched. As you can probably tell, I'm new to these things.
As far as I know, all the standoffs are in place. I'm using an Ultra LSP 700-watt PSU, and a check of all my components revealed that, to the best of my knowledge, I am not overloading it. Another question I presume is a bit noobish: how do I run memtest86+? I assume you burn the .iso to a cd, but I don't know what to do after that.