You have upgraded to Windows 10 then manually installed Windows 7. The recovery partition now will no longer work. The partition shows up in Windows explorer after a manual install but on a proper factory install its hidden. Perform a proper clean install by using Diskpart clean all before loading Windows 7.
I have a Dell Inspiron 3647, that came from the factory with Windows 7 installed. When windows 10 came out and was free, I upgraded to Windows 10. After numerous compatibility problems with my older programs, I decided to downgrade back to Windows 7. It was over 30 days, so could not go back automatically to Windows 7. I had the Windows 7 installation disc and drivers, so I did a clean install and re-installed Windows 7. After the installation of Windows 7, I got a message that said: "You are running out of disc space on RECOVERY D."  Two things I would like to know. What is the partition "RECOVERY D" used for? And, how can I get rid of the message "You are running out of disc space on RECOVERY D?" Any suggestions appreciated. dino80
Running out of disc space on RECOVERY D