Administrator account help

A couple days ago I was messing around tryining to get my pc to go to the desktop without me typing in a password. I went to user accounts and unchecked require password. Now it does go to the desktop when i wake it up but it wont let me run or install anything if i do a box pops up from User Account Control that says TO CONTINUE TYPE AN ADMINISTRATOR PASSWORD AND THEN CLICK NEXT.But there is no place to type in a password.If i go to safe mode there is no admin acct. and everything i try to do the same box pops up.any help would be appreciated

bmoster said:

A couple days ago I was messing around tryining to get my pc to go to the desktop without me typing in a password. I went to user accounts and unchecked require password. Now it does go to the desktop when i wake it up but it wont let me run or install anything if i do a box pops up from User Account Control that says TO CONTINUE TYPE AN ADMINISTRATOR PASSWORD AND THEN CLICK NEXT.But there is no place to type in a password.If i go to safe mode there is no admin acct. and everything i try to do the same box pops up.any help would be appreciated

Woould be easy if you had a backup to restore from. DO You?

Yes I have a backup to restore from but when i try to restore . the box pops up saying to type in an administrator password.

I figured it out you have to boot up in safe mode. then select switch user then log on as administrator then type netplwz in the find programs box check the box that says must use password and then you can boot back up and you should be good to go.