How to reset the user name on acer notebook

[tngurly]

Hello,
my user name changed and now i cant log on to my computer..how can i fix it

 

[hang-the-9]

Type in the old user name over the other one. Why did your account name change in the first place? If this PC is on a domain, there should be a button that allows you to change logon info at the login screen.

 

[tngurly]

i just bought an acer notebook yesterday and created the username and password then i logged off. This morning when i turned it on the username was changed and i cant logon