Posted 28 June 2016 - 07:34 AM
In addition, you probably need to do a "clean" install of Windows 10 which means you will lose everything that you don't have backed up AND, regardless, you'll need to reinstall every program that you use.
If you're OK with that, create the install media as Usasma outlines above, boot it (this is manufacturer and make specific so I can't give a definitive step to do it) and, when it asks you where to install Windows 10, delete every existing partition on the hard dis drive then click next.
BTW, there are 68 ways from Sunday for the "upgrade" to fail which include incompatible drivers, the leftover results of an infection, the wrong antivirus software, and a host more reasons. A fresh, clean install is the best way to go.
Computer dinosaur, servicing PC's since 1976