previously i have windows 8.1 when i bought laptop then windows show notification upgrade it windows 10 so i upgrade it but windows not activate so when i go to settings - update and security ... then when i try to click on activation then i can not able to click on it ? is it disable ? what happen on this ....
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An upgrade usually damages system files, run SFC scan.
SFC Command - Run in Windows 10 - Windows 10 blog
Or just download this file and run it as admin, it will take about an hour to finish, then it will ask you, what to clean.
ok i will try this and will you please tell me how to activate windows .. as when i bought laptop then this "activate windows" not appear on windows 8 so when i upgrade to windows 10 this is displayed
You will need to get your files in working order before even thinking of activating - these GWX upgrades are known to cause bad installs sometimes. Best to repair install from an ISO, IMHO.
you mean i reinstall windows 10 on my laptop ? and what is gwx?
Yes you run setup from the ISO and "Keep everything" - GWX is the icon thingy that does the background download and upgrade from the notification.
how i install windows from iso ? can i download setup from internet?