My old computer finally gave up the ghost and I didn't feel like trying to salvage it, so I built a new one. All of my most important files (photos, music) were on the external hdd already, so I quickly backed up some other files and was good to go. However, when I tried moving the files from the external hdd, I immediately ran into problems. When I plug in the drive in the USB port, it gets detected just fine. However, when I try exploring the drive, it takes a loooooong time for my computer to... detect the files, I guess? When I double-click on the drive location, it opens up the first page of folders just fine. But then I click on a sub-folder, and it takes a full minute or two for all of the folders (about a dozen or so) within that folder to be populated onto the list. Then, the fun really starts. Each time I click on a folder in any way, the window freezes for ~30 seconds. It doesn't freeze my computer; just that explorer window. Then I can -sometimes- double-click on the folder, but depending on which folder it is, I get a different error message. It seems like the older folders are more likely to open; I was able to successfully copy and paste one folder into my new computer. Then there is one folder full of pictures that opens, but only some of the pictures can be copied over -- the others give me an error message saying "Cannot copy file: Cannot read from the source file or disk." The newest folder on the drive, when I try to open it, gives me an error message saying that the drive needs to be formatted. Uh, no, thanks. I've tried the drive on 3 computers: My new desktop running Windows 7, my netbook running Windows XP, and an old desktop that runs XP. Same behavior on all of them. I've tried using the program DataRecovery to see if it worked on the external hdd, but it gave me the error "Data error (cyclic redundancy check)" What should I do? Thanks in advance. Sorry if I've left out anything important.