from what I read into your posts, I assume you are able to pass POST...is this correct?

also, how knowledgable are you about your BIOS?

and, just for my reference, try this: get into your bios and just let it sit there for a while (if you have a temperature monitor in your bios, go to that screen and let it sit and observe the temp readings..also, see if your HDD is being recognized)