Recovery error when backed up to my usb Toshiba drive.
We're going to need a lot more info here if you'd like any help. What is the error? How was the backup taken? How was it recovered? Was it a full disk backup and a full disk restore with all partitions? Did you start the recovery from Windows or rescue media.... if with rescue media, did you boot it the same way the OS was installed (legacy/MBR or UEFI/GPT)?
Your guess is as good as ours with nothing to go on.