Thanks! Hmm.. yea sounds like it. Very nice of him of overclocking your system. That is what I like about small computer stores. And prices, I find, are usually very fair, ESPECIALLY compared to big chain store service. Voltage increase, stabilizes the system. It could be that one of your processors (GPU or CPU or chip-set) or RAM, was on the those that were on the edge of the silicon platter, which usually aren't the highest quality. Increasing voltage of that component creates more heat, yes, but increase stability. Thanks for getting back to us. Please let us know how your system is now, after longer usage, so that, if your problem is solved, I can suggest to others to increase their voltage by a bit, as a potential fix, to help them out.