Could you please try to open Photoshop s an administrator? Right click on Photoshop icon on desktop and select "Run as administrator"?
If that doesn't help, Restore Photoshop preference to default, Take a look at this article Preferences in Photoshop for instructions.
opening as administrator made no difference.
I tried the keyboard shortcut but it just brings up the properties dialog
I cant findthe rifht path to move the files manually. No library folder is listed
You may also do this using a keyboard shortcut.
To restore preferences quickly using a keyboard shortcut:
Press and hold Alt+Control+Shift (Windows) or Option+Command+Shift (Mac OS) as you start Photoshop. You are prompted to delete the current settings. The new preferences files are created the next time you start Photoshop.
Note: Using the keyboard shortcut, preference files for custom shortcuts, workspaces, and color settings will also be reset to default.