microsoft accounts sign in

I'm unable to log into my Microsoft account.   I signed up using a gmail.com address as my user name.   This was verified in a reply email from microsoft.   All worked well for a few day until I got a message to reset my password.  I tried to log into my MS account however the system states that my username/account does not exist.   I cannot therefore reset any user account details.  I have tried the MS reset pages but they do not work as my account 'does not exist'.   I have downloaded and run the accounts trouble shooter without result, 'I do not exist'.   Ist line MS support was unable to help.  Second line MS support abandoned me after promising to call back.  I've signed up for a second MS account using another e address to log into this system.   I now have no admin rights on my computer because my password is not recognized.   Can anyone help to get me out of this loop of 'non existance'?