Login Account Corrupt?

I have a problem with my login account. I have read numerous posts here about similar problems but have not found a solution that works for me yet. I have three regular login accounts - mine (admin account), my wife's (admin acct) and my son's (limited acct). For some reason control panel is not available on the start menu any longer when I am logged in my account (I do have the "set program access" on the menu but when I click on it it tells me I do not have permission to access). Control Panel is available on my wife's login start menu. When I go to user accounts in my wife's control panel - my account is listed there as an admin account.

So after reading a few similar problems in this forum I believe my account may be corrupted. So I create a new account under my wife's login, which I plan to copy my settings and files over to and delete the existing corrupted one, but I cannot create anything but a limited account there. I then ctrl-alt-del twice in the welcome screen to access the real admin account to see if I can change it to an admin account. BUT although control panel is on the start menu - when I click on it, it tells me that I do not have permission to access it. Even from -what I'm pretty sure is - the real administrator's account. How can this be? I have also tried to add the new account to the administrators group in lusrmgr.msc and that doesn't work either. I have spent so much time on this I am at my wit's end. Anyone have any suggestions that might get my account back working properly or how to get a new account?