I can see my Maxtor external driver in both device manage and my computer but every time I try to access it, it gave me 'I/O Device error' message. I also ran Disk Check in Device Manager and it says the disk is ok. Please help.
More about :external hard drive device manager access
Maybe it needs the driver updated. Try disabling the external drive (Maxtor) in Device Manager, then re-start the computer with the external drive connected. Windows will "find" the new device and install the proper drivers.