How to upgrade the windows 8.1 OS into Windows 10...??

https://www.cnet.com/how-to/microsoft-windows-10-free-upgrade-offer-assistive-features/

Hi,its a complicated hideous process,to learn it step by step refer the given link:https://www.google.co.in/url?sa=t&rct=j&q=&esrc=s&source=web&cd=3&cad=rja&uact=8&ved=0ahUKEwj5l7i9pJ3VAhVLLo8KHUWZBWkQFgg1MAI&url=https%3A%2F%2Fwww.groovypost.com%2Fhowto%2Fupgrade-windows-8-1-to-windows-10%2F&usg=AFQjCNFFZiOcZ7kMslCR_nY4BGSA0kgZrA

Krunal Barot9y ago

If you have genuine windows 8.1 you are still allowed to upgrade your windows

Try using windows 10 Upgrade assistance

https://www.microsoft.com/en-us/windows/get-windows-10

Amit Gupta9y ago

All you need to update your system via windows update. Once all update installed, you can see a small win 10 icon named get windows 10 right beside your clock. Click and follow instructions on screen.

Reference

https://www.groovypost.com/howto/upgrade-windows-8-1-to-windows-10/