DVD-RW Burnner Turns On And Will Eject And Close

Tonight my desktop stopped working. Up until tonight it was running perfectly as far as I could tell.The only thing that I had noticed about it over the last week or two is the power supply sounded like it was running a little harder/louder than usual and somtimes the noise it made would get louder and then lower and louder and lower sorta like an engine revving up and down but not to an extent that one would raise their eyebrows at it or suspect anything.Tonight I was in the process of visiting the AMD website with the intention of updating the drivers for my video card when the computer rebooted. This process occurred 3 more times over then span of the next 10 minutes..once right after windows had completed bootup and the desktop had loaded, and then 2 more times after bootup and I had logged back onto the Internet.After that final 3rd time I turned the computer off entirely. I clicked the on/off switch on the power supply off and unplugged it. I tried clearing CMOS by resetting the CMOS battery at this time. I then plugged the power supply back in and clicked the on/off switch back on. I go to turn the computer back on and now it will not post. No beebs, no video signal.

I am still getting power to all of the various fans and the DVD-RW burnner turns on and will eject and close. The only thing that I have noticed not working at this time (aside from the lack of post, and ect.) is that the blue light that lights up the on/off button to my mid tower and the hdd light is not working anymore.I have tried reseating everything in the computer twice now but the results are still the same in the computer still won't post anymore.