Win 7 & Win 8 - Upgrade to 10 now website
"Looking to upgrade this PC?
Qualified Windows 7 or Windows 8.1 devices can upgrade for free.
Click the Upgrade now button to begin the upgrade. Click here for information on qualified editions.
"Need to create a USB, DVD or ISO?
If you need to install or reinstall Windows 10 using a USB or DVD, you can use the media creation tool below to create your own installation media with either a USB flash drive or a DVD. The tool provides file formats optimized for download speed and can be used to create ISO files.
If you're on an Enterprise edition, the media creation tool and the Upgrade now button above won't work for an upgrade. Please see the Volume Licensing Service Center for more information."