Oy. That sucks so hard!
The last time Windows ate my computer, I went to Linux. Had enough. I was just so, so done with Windows. Bloated OS's and programs, viruses and trojans are just a reality of life, and once in a while it just throws a fit and borks everything. I'm not a careless computer user. I was raised by a geek. There's no reason my OS should just be imploding every so often.
I went to Linux Mint, and that was a year and a half ago. No problems. It's a true "average user" desktop Linx (I swear, it really is!) and it's dead-easy to use. If you've had bad experiences with other "desktop Linux" systems (*cough* Ubuntu *cough*), I swear, this is actually a desktop OS. Cross my heart. A 6-year-old could install this.
Everything's set up (FireFox, Open Office, etc), it's very intuitive and easy for someone coming from either Windows or Mac, it's pretty, very fast, and is compatible with most hardware. It can have minor problems with speakers and mikes, like all Linux OS's do, but stick to popular maufacturers and you probably won't have issues.
Oh, and it's free. Open source FTW.
Since then, no crashes, no viruses, nothing. My computers just work. All the time. Every time.
Unless you're a gamer there's just no reason to keep dealing with Windows anymore.
Ok, done with my geek rant now.

Just thought I'd share, since Linux Mint is the thing that made me stop wanting to lob my computer off the roof.