Change Admin Password Without Previously Knowning The Pass

Why would you want to do this?
You can become Admin on the computer which allows you to:
Visit blocked websites
Play games
Watch youtube 
Facebook
 Urduhacks.blogspot.comat school and a lot more. 

Obviously this guide won't work on all computers but will work on most. 

1. Go to Control Panel 
2. Click on Administrative Tools 
3. Click on Computer Management. 
4. Go to System Tools. 
5. Then to Local Users and Groups 
6. Under the USERS menu you will see all the accounts including the admin. 
7. Right Click on the Admin account and select Set Password 
8. Enter the new password without the old password 
9. You are done.. 
It works. If you're on your school computer do it to the admin