User Account issue

Hi,

 If i try to login my domain user account credentials in my machine.It will work fine after restart my machine everything has been lost in that account.Again I set my settings and mail config in outlook after restart my machine again lost all the settings.
I was using windows 7 32 bit professional OS.also tried to reset the account in Active directory that idea also not working

Each & every time facing this issue.My user account has been continuously reset after restart machine.What should i do?
My domain account working fine another machine and local user account also working fine in my machine.