I added a solid state drive (SSD) to my desktop PC (vintage 2009 Dell server with 3G RAM and Intel Q6600 Quad-Core CPU) as the primary drive then installed WIN 10 clean install from bootable thumb drive. Very easy upgrade, too! So far I like it and using the built-in anti virus and malware protection instead of AVG and MalwareBytes. It boots very quickly and fast. Soon I will subscribe to Office 365 but using Google Docs and Drive which fulfills my needs. I switched to Chrome and installed a few apps and widgets. Now organizing files from 2 hard drives to 1TB external drive.