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#11
Thanks, now I know.POST stands for Power On Self Test. It's a function built into the BIOS on the motherboard. If it fails one of more of the checks you may get an error message , usually a series of beep codes, or in a really bad situation a blank or black screen. All this takes place before the operating system is loaded. Usually when the POST is finished you hear one short beep and then the OS starts to load. That is if you have a speaker connected to your motherboard. If you didn't have a speaker you could easily confuse a failed or stalled OS load with a failed post if you weren't watching too closely. Especially if it's the video card or driver thats throwing a wrench into things.
If it was me I would take the side of off the case and make sure there is no buildup of dust and clean things up if need be. Then I would power things up and try to get into the BIOS menu to check temps. While you have the side off make sure all the fans are running, especially the one on the CPU and video card.