My PC is still infected, I cannot print or update AVG 8.0 nor manualy nor automatically, other virus protection cannot detect the virus, which tools can I use to clean my PC?

He has a lot of nonsense on his laptop and i have already installed a pestpatrol and an antivirus and ran them both so i have all pests and viruses off. how do i clean up his desktop from all the icons and make it look and run like a well maintained computer??

Can you do it for free online?

are there any computer clean ups that arent a scam and do a good job for free?

Everywhere I keep trying to get it from charges me at the end. Is there a completely free one somewhere?