I have a Dell Dimension 8400 that has shut itself down a few times. When starting back up I get a message saying the system was shutdown due to a heat event hit F1 to continue. My power supply appears to be running and pushing air out the back via the fan whenever I check it. It is not a strong breeze and sometimes feels like it is not pushing very much air out, but some. The airways are clean. The room this computer is located in, is kept at a reasonably cool temperature. My log files don't really tell me anything on the subject as far as I can tell. I am hesitant to purchase a new power supply, not knowing if that is really the problem. Any suggestions on how I could narrow down what the problem is, or help resolve the issue?
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