Thunderstorn here late Friday afternoon. Crash, boom, no electricity. Five hours later, Whirrrr, lights come on and ceiling fan starts, but the computer does not, so here I am sitting here now, posting on my daughter's old HP lap Top. The good news is that the problem seems to be the case power supply instead of the Mb and processor. Although,I just got a power supply and tried it with nothing other than the Mb hookedup.It did come on, and I did get a post beep, so maybe I got off cheap ( although new mother boards and processors are kind of like kilts, any excuse to purchase a newer better one.)