New
#11
[Please do not skip the elementary checks in my post #4 - just in case. No point in trying to fix files if there are more basic problems- that's building a house on sand.]
I have completed all the checks, sfc reports no errors, DISM says all OK. But the error persists - if I try to move a file from folder to (say) the desktop using the mouse, Explorer freezes and I have to restart it. Now seeing if I can find the appropriate .iso or .wim file .