Thak you all for your helpful comments. As to the recommended software, to run the software, I need computer permission and and I cannot give permission since the computer does not recognize either the user, or password required to do so.. Yes, I tried giving commands in the safe mode.
To repeat where I am:
My account is set up as a standard account w/o a password.
I can boot up the computer w/o a problem
I can effectively change or delete a pw
I cannot change or add an account, or change an account setting via Users in the Control panel as a popup "user account" window does not accept my pw.
In safe mode or via cmd.exe,, the computer recognizes my account and password settings.(ie net user account name cmd)
In safe mode or via command, the computer reconsizes the administrator as a built in administrator with a password, It states that the last time the computer was logged on was in 2007, which is probably the first time I booted up the computer. (ie net user administrator cmd)
When I enter the command " net user administrtor /active:yes", I get 3 lines syntax that have no meaning to me. In any event, it does not change my standard account to an administor acct nor add an administrator account..
The problem appears to be that the computer recognizes my account for log in purposes, allows me to change the password, but does not allow me to run the computer as an administrator, nor change an admistrator. I do not think it is solely a pw issue. Some event happened today to cause this, and I am at a loss to explain it - except perhaps for a corrupt file or register issue. I looked at the event log and nothing stands out that explains it.
The easiest way to correct the problem appears to be to reload the OS - assuming this witll do the job.