It depends how experienced you are. Personally, I'd go into the Bios (press F2) and change the boot sequence to utilize the DVD drive first. Then place the system restore disc or any OS disc and see if it starts. If it does then you know the other hardware is okay. Or you could hook up a hard drive from any other functional computer. It won't load Windows but it will try and lock up (due to drivers). But then you know it is merely the current hard drive. HD are simple to replace. Buy one online (New Egg preferrably) if you can wait a few days. Let me know what you find out.