Hard drive terror

Woke up this morning to my desktop machine frozen on the Windows boot-up screen. I hit a key and it rebooted. What the. Let it go through, it froze again. Tried safe mode, froze again. And a second time. Uh oh.

Tried some rescue LiveCD rescue stuff, maybe my Windows install was just barfed. My hard drive seemed to be gone. I fearfully checked the state of my backups -- was pleasantly surprised to see they were intact. Also Gmail meant my email still worked and Google Browser Sync meant I had all my bookmarks and cookies on my laptop. Sweet.

I started going through the motions of getting a replacement hard drive, rebooted the desktop again for kicks and everything worked fine. "Windows has recovered from a serious error." I'll say.

Hard drive on the way out? Power supply dying? Heat? I don't know but that was a dumb way to kill a couple hours.