When I turned on my external hard drive so the Windows backup could run I received the following message,
"The parameter is incorrect (0X80070057)." My ext. hard drive is a Toshiba USB-HDD NTFS 1TB.
In the icon tray it showed that the backup was in progress but it did not complete.
Disk Sentinel shows the hard drive is in perfect condition.
My OS Windows 7 Pro.