In the midst of searching for answers to this problem, I tried a couple things others posted in answers on various sites. 1. I had password protected my maxtor OneTouch 4 mini 250gb. I plugged it into my 32 bit computer and removed the password. 2. I
then plugged it into my 64 bit computer with my Canon camera cord (1 USB end into the computer and the smaller USB for the external drive.) A screen popped up that asked if I wanted to "Scan and Fix OneTouch (E:)? I clicked on continue without scanning and
voila! i can see my files. One set was in the Maxtor Backup folder and another set in the Maxtor Sync folder. 3. Using the Maxtor power cord also worked.
I think the solution is to remove the password. Go figure. Good luck!