If you don’t like typing passwords each time you start your Windows, then you should read this guide. It works for Windows 7 and Windows Vista. For XP it is the same thing, just the path to the user accounts window is different. While there are many similar guides on the net for this topic, this one is set apart by the fact that the author took the time to explain some watchouts you should be aware of. So, read it until the end.
Log on Automatically to Windows 7 Without Typing Your Password
On Windows XP you can just set a given user to log in automatically. I suspect it’s the same in Vista/7. May take a few more seconds, but probably preferable to a 3rd party solution.
Also can be done through registry..
http://support.microsoft.com/kb/315231
You can use Registry Editor to add your log on information. To do this, follow these steps:
1. Click Start, click Run, type regedit, and then click OK.
2. Locate the following registry key:
HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Winlogon
3. Using your account name and password, double-click the DefaultUserName entry, type your user name, and then click OK.
4. Double-click the DefaultPassword entry, type your password under the value data box, and then click OK.
If there is no DefaultPassword value, create the value. To do this, follow these steps:
1. In Registry Editor, click Edit, click New, and then click String Value.
2. Type DefaultPassword as the value name, and then press ENTER.
3. Double-click the newly created key, and then type your password in the Value Data box.
If no DefaultPassword string is specified, Windows XP automatically changes the value of the AutoAdminLogon registry key from 1 (true) to 0 (false) to turn off the AutoAdminLogon feature.
5. Double-click the AutoAdminLogon entry, type 1 in the Value Data box, and then click OK.
If there is no AutoAdminLogon entry, create the entry. To do this, follow these steps:
1. In Registry Editor, click Edit, click New, and then click String Value.
2. Type AutoAdminLogon as the value name, and then press ENTER.
3. Double-click the newly created key, and then type 1 in the Value Data box.
6. Quit Registry Editor.
7. Click Start, click Restart, and then click OK.
After your computer restarts and Windows XP starts, you can log on automatically.
If you want to bypass the automatic logon to log on as a different user, hold down the SHIFT key after you log off or after Windows XP restarts.