For Windows 7 and Windows 8.1 users only
Windows 10 free upgrade for customers who use assistive technologies
Click on “UPGRADE NOW” button to start.
Alternative method using Media Creation Tool
Download Windows 10 Media Creation Tool
Click on “Download tool now” button. Open downloaded Setup file and click Yes, Accept, choose “Upgrade the PC now”, then click Next.
Note: you may be asked to enter your Windows 7 or 8.1 product key. Be sure to have this ready before the upgrade. Magic Jelly Bean Keyfinder is useful for this.