I have a laptop that is used at work on their domain. I have a User name and Password to logon to the computer on the company domain. I tried to change Member of Domain (the company domain) to Member of Workgroup (my workgroup HOME) at home in order to create a wireless network at home. To do so, I selected Workgroup enable (domain disable) under “Member of”, then click “ok”, then the computer asked to key in a User mane and Password, then I leave it blank then click “ok”. Then the computer asked to restart. After I restart the computer, I could not logon to the computer anymore. My User name and Password for company domain do not work anymore. Hence I have no way to logon to the computer. Maybe the Member of Domain has been change to Member to workgroup. Does anyone can fix this problem? Please help! Thanks. My system is Window XP Professional SP3.