Recently bought an Iomega Prestige Portable Hard Drive. 1TB. USB 2 & 3. I have Windows 7 Ulltimate 32bit. Every time I try to backup the computer to the external hard drive it never completes. The one time I was able to find a detailed reason it said the shadow copy timed out. It seems to get hung up and never finishes. Last time it got 340mb into the "backup" but still did not complete. When I went to the details page it merely asked if I wanted to run it again or change settings. This is the 3rd time I have tried to get a backup onto this hard drive. I know the drive is recognized, it shows in "computer" and I also know that it works, as "copying" files to it functions and the files do copy and can be opened. When I originally plugged it in, it loaded some software of it's own, apparently to function, which lists itself in "computer" as "CD drive H" as well as showing as an external drive. See screen shot.