Had the same thing with mine 2 days ago. One of the two memory sticks had burnt out. I replaced it and it now works fine. Just to clarify my cd spun, it powered up but would not boot to even bootup screen etc. Identical to your symptoms, for the price of a memory stick these days i'd try changing it. If you have more than one fitted try taking one out and try starting again, then if it don't start change them around and try again. Don't know why but on desktops when a memory stick goes you get a beep code to inform you but on 2 laptops now i've not had them. Good luck and i hope it works.