During usage, my computer gave me a blue screen. I didn't think too much of it, and attempted a restart. The BIOS started loading until it stopped with an error: "error loading operating system". I thought it was software, but when I booted off my linux live usb, the drive didn't appear. Right now, my main concern is accessing the contents to back it up. Any help would be appreciated.
Dell Dimension E520 WinXP 4GB RAM 160GB hard drive