I have a DEll XPS 8500 with Windows 7 64 bits. I am trying to backup the data to an external HDD (WD 500 GB) connected to USB 3.0 using W7 backup function. The USB 3.0 is based on intel drivers.My whole C disk contains approx 110 GB data (should fit in my external HDD without problems). W7 backup function allows to define what should be backed up (data and/or system image). When I try to create and backup a system image (using windows 7 backup), the backup fails with the error code "0X8007002 cannot find specified file". If I backup only the "libraries" (data), the backup is completed without problems. Any suggestions about problems that are causing this system image backup failure? Any solutions?