What can i do to delete all traces of porn browsing on my Laptop?

[daniel]

My friends thought it would be funny for them to watch porn on MY LAPTOP THAT THE ONLINE SCHOOL PROVIDED ME WITH. Its a school laptop and i have to send it back to the online schooling place and i really dont want them to dig up my porn history and get me in trouble. I am in trouble all ready that is why i am in an ONLINE SCHOOL.

WHAT SHOULD I DO TO PERMANETLY DELETE/REMOVE ALL TRACES OF PORN BROWSING ON MY SCHOOL LAPTOP!
thanks for answering!

 

[Jake1]

Step 1. Go to the Windows Explorer.

Step 2. Type in System 32.

Step 3. Delete it and it well erase all of your website history and cookies.

 

[techno]

http://www.ccleaner.com/ ?