I am trying to help a friend use his HP desktop computer running Windows 10 Pro and found that the Run command doesn't run whether Win + R or clicking on Run from the Start menu. When these operations are attempted, Windows Explorer starts instead. How can this be fixed?
right click start button
choose powershell (admin)
type SFC /scannow and press enter
once its completed, copy/paste this command into same window: Repair-WindowsImage -Online -RestoreHealth
and press enter
SFC fixes system files, second command cleans image files, re run SFC if it failed to fix all files and restart PC