Can't access user account on the control panel

[mysterysparks]

hi,
can someone help me, somethink has happened and i cannot open user accounts on the control pannel. when i try to access it it shows a box saying THE CURRENT USER ACCOUNT IS NOT RECOGNIZED, PLEASE RESTART THE COMPUTER AND OPEN USER ACCOUNTS. i do this but nothing happens, i've looked on google to see any solutions but none so far that worked, can anyone help me.

thanks
lewis

 

[Nemix]

Try booting into SAFE MODE. Restart and press F5 before Window loads, log into Administrator account and change what you like.