I had been backing up my Win10 system with the above to an external USB3 drive which I don't power power up all the time. All of a sudden File History and WinBackup (using the allowed control panel Win7 backup and restore) stopped functioning because the "external drive had not been used in a long time". I corrected File History by changing the parameters as MS advised but the backup function no longer works. Is this fixable? My PC is an HP i5, 8G, 256 SSD, running Win10 Pro 64. Acronis backed up fine to "My Backups" on the external drive, but I would like to continue with the Win7 program.