My father upgraded his Windows 7 to Windows 10, more than 30 days ago and thus cannot "undo" the upgrade.  He does not have the recovery disks that came with the computer, but the "hidden" recovery partition is still present on his hard drive.

He wants to go back to Windows 7, but the laptop will not accept F8 (or Cntrl-F8), and we have been unable to access the recovery partition.

How can we get his laptop back to factory shipped condition?  He doesn't care if he loses data on the drive (as we have backed up everything personal), we just can't figure out how to get Windows 7 back on his computer.

I have his original W7 activation code (as well as the service tag and express service code).

Would greatly appreciate any advice or assistance.

Thank you.

--Roxanne Mills