Ed's son is getting a bluescreen of death, and when he reboots, it's not reading the disk. Leo says it's obviously a disk failure caused by a failed or corrupted sector. It's the most common failure point on a computer. The good news is that you may be able to recover the disk using SpinRite. But for the cost of that program, you can simply buy a new hard drive. So if you have nothing critical on the drive, replace the hard drive. You can get a larger one for cheaper. And while you're at it, get a solid-state drive. It'll make the computer much faster. You can get a 1TB drive for around $40. Leo's favorites are the Samsung EVO SSDs.