Just remember, within reason even if a computer wont load up, you can always take out the HDD and get access to the files. I've had computers fail on me, and I just took out the old Hard Drives and connected them to another rig to rip all files I needed. Always keep at least three back ups. I use a tool by Microsoft free of charge called SyncToy which synchronizes my main files to a backup, then I do another back up to an external hard drive. You should always keep one back up offline and unconnected. As a programmer and artist I've lost files before, and it sucks to see your work gone within a blink of an eye.
