OK here I go again.
Back your sh%t up!
I have written many times previously [read here and here and for Macs here ]about the prudence and wisdom of having backups of your digital data. And by backup I mean that your data exists in TWO places at once and is able to be accessed or recreated from either source.
I believe the best solution is to use Disk Images. And my favorite tool for Windows is Acronis (they should pay me for all the referrals!).
Right now Acronis has another super deal Acronis® True Image™ Home 2012 WITH their Plus Pack which enables restores to dissimilar hardware for only $49.99! And a 3 PC license for only $79.99.
I urge you purchase a large external HDD (or two) – they are very inexpensive now ($100-$150 U.S.) and to invest in this software if you haven’t already. Create a Full Image and breath a sigh of relief, for now. Follow my other posts on continuing a good backup plan. With the option of ‘Universal Restore’ you can ‘take your data forward’ to new/dissimilar hardware too!! OK be data safe! Peace out.