Help ! - Think Tweak Went Wrong

I don't know whats happened or why but lately when I boot I get a Microsoft Error Report has to be generated and then the system reboots.

BEfore that I get a blue screen that briefly says that the error is:

NTACCESS.SYS - PAGEFAULT_IN_NON_PAGEAREA.

It then reboots and repeats this error for about 5 times before finally logging in

What have I done and how do I repair it.

 

It was something to do the Log on Menu when windows starts. This tweak supposedly bypassed this and just went straight to windows without entering password.

Now I don't know how to reverse it.

 

Once you get your system back up and running, you don't need 3rd party software to force an automatic logon:

1) Go to the Start Menu and the Run box.
2) Type in: control userpasswords2
3) Click OK
4) In the new Windows that appears select the account you wish to make the primary logon.
5) Uncheck the "Users must enter a username and password..." box.
6) Hit Apply and a dialog box will appear asking you to confirm the selected users password.
7) Click OK
The changes will work the next time you restart your computer.

 

Run this reg file to add a "User Accounts 2" applet to the Control Panel for easy access to this control:

http://tinyurl.com/jdru