+ 1 Votes Sounds like the hard drive to me. jcitron 1 year ago I've seen this numerous times in laptops more than desktops. The machine freezes, rarely a blue screen of death (BSOD), and upon a reboot the drive is dead. I tell everyone to backup their data. Period. And more importantly, by data I mean documents, such as my documents folder. Applications can be replaced and reinstalled, but your personal data cannot. The replacement drive will run you between $100 and up, depending up on the size. Hopefully the machine is still under warranty and they'll do a hardware swap for you.