Have a laptop, Presario CQ56 that a friend downloaded windows 10 last year. I would like to uninstall this version back to the beginning and reinstall clean version back onto it? I dont have a disc so would need to do this through the internet. He has upgraded and installed so much crap that I would like to just start over and only put back on what is required to operate. Thank You for your help. What do I need to do to start this process? Right now I have no internet do to the fact it is having a Group Client issue and has the laptop wiggin out.