Context menu / right click function not working in this administrator user account, and not working correctly (but does display functions) in other administrative user accounts

lost context menu access (right click from mouse not working)

I am the administrator.  Admittedly not a good one.

I had only one user account: Administrator with a  password, since I use my PC solely, and at home all the time.

No one else has access to my PC which is password protected at start up and when awakening from hibernation.

Thus I did not create a standard user account without administrator capabilities.

Start up occurs normally.

However, When I right click on a file or icon, desktop or in any drive, nothing happens. Nada. Neither in Desktop nor in files.

This from both the mouse and the Track Pad.

I attempted to update both mouse and track pad drivers and both are OK, u to date.

So the issue is not a hardware issue.

Dragging function does work on Desktop.  And in file folders.

It is only the context menu drop down that does not occur on right click.

I looked in Start Menu and all permissions seem to checked properly in Start Menu > Customize> "enable context menus and dragging and dropping", which is checked.

OK: MY BAD --- Here's how it happened:

All this occurred after I installed and ran a software which is called "RegCleanPro", a supposed registry cleaner and registry defragger.

Ordinarily I use only CCleaner.

The ReClean Pro software diagnostic indicated my registry had lots of errors, though I personally could not tell from how the computer operated. So I installed it and am sorry.

I went to uninstall this software after a diagnostic, and after it wanted me to purchase the software to actually "repair" the issues, so when I went to uninstall the software, during the uninstall process, I was offered a free one time "fix/ repair" of the supposed registry problems.

I went for it, ate the apple so to say.

I know, know, I should not have installed in the first place but the software said it was a special "Microsoft Partner", and its ad came up on a Windows 7 answer page to an unrelated question.

I did not then know of the issue but did uninstall the RegProCleaner software.

Fully.

I Uninstalled the RegCleanPro software.

And then after the issue became clear, I Restored System to an earlier point-

a point that is pre-installation of the RegProCleaner.

Unfortunately I still have no access to my right click context menu in this administrator/ user account.

However, in Firefox I can access standard context menu functions  FIREFOX> (drop-down) > EDIT> copy and cut and paste and print etc all appear to be functioning.

Right click function not available in office software, WPX5. But I can cut and copy, etc., from teh edit function in the software.

I also performed a check of the system files (SFC, in command prompt) - Command prompt> sfc /sfcscannow -- and no issues were reported as integrity was good "Windows recover protection did not find integrity problems" .

Also added a new administrative user account and the right click / context menu function works but not seemingly correctly.

But it does work! 

Explanation:

I just tested the right click/ context menu function in another newly created user account (with administrative capabilities) and what happens in the new user/ administrative account, is the right and left click functions work from the track pad but the right and left click functions DO NOT work for correctly the mouse.

Also,

I started my PC in Safe mode in the apparently corrupt administrative user account and the context menu function is NOT working at that level.

So my bad. Again my bad!

There must be a switch to access context menu (I know the function somewhat works in another user administrative account which I created as part of my recent testing- see above),

or is there is special Shell Program that will re-install the context menu application for Windows 7 in all user accounts?

I am reluctant to do a "Repair" install of Windows 7 without investigating all possibilities.

(I have Windows 7 file (naturally without updates) in ISO format and in EXE format on pen drives, and a cd.)

Please advise if there is a simpler way to retain access to right click functions.

Please be very detailed in your suggestions.

Please be VERY DETAILED to a fault in your explanations and directions.

So one step at a time, please:

Is there any way to initiate access to my right click / context menu function in this user account via a diagnostic or fix or repair or reinstall of this system function?

I suspect the solution will be a simple one, but I do not know which simple one it is.  Again please be very detailed in your suggestions.

Thanks to all.

Thank you in advance.