Compaq Windows 10 Hard Drive Recovery

From Login

If you can get to login screen you can do the following to refresh or reset Windows 10. If not see guide below.

Press and hold the shift key
Now click the power button (bottom right) and click restart
you will now be at the WinRE menu
Click troubleshoot
Select reset (keep data) or reset (loose data)
This can take some time so be patient
Hopefully you can now access Windows.

From Windows

From Windows click Start
Then All-Programs
Then Recovery Manager

Select System Recovery

Follow on screen prompts

From boot

If you are unable to get into Windows to start the recovery then you can start the process when you first switch on the PC.

During POST press the [Escape] key then from the menu choose [F11] system recovery.
Press [F11] during POST
Select System Recovery
Follow on screen prompts