Hi Geordiefred ,
Double click E Drive(Recovery Partition) and delete the following files "MediaID.bin" & "Folder with Computer / User name". Do not wipe the entire partition as it has a recovery image for your PC
The problem is caused due to the Microsoft Back & Restore Center not being configured correctly , It Tries to back up your data from the C drive to a Recovery Partition ( E Drive- Very small in size compared to C Drive ) . You could change the setting under the backup and restore center to back up the data onto a DVD or a External HDD- Which would avoid this problem in future .