Up to windows 10 windows 10 is the best combination of the windows you already know plus lots of great improvements yoursquoll love technologies like instantgo let you boot up and resume quickly everything runs fast and smooth and windows 10 devices now have battery saver to automatically conserve power mdash so you can work longer and play harder for total confidence windows 10 helps you stay up to date and has more built in security features than ever for helping protect against mal