how to upgrade to windows 10 from windows 8.1

If you want to upgrade to windows 10 from windows 8.1 then follow* this procedure.

step1 : make sure you have installed all updates from windows. This is done as follows.
           control panel > search for update in control panel search box > click on windows update > check for updates > if there are any updates, install them. once again make sure, you have installed all updates asa same as above.

step2 : download file from
step 3: run the file
step 4 : click on upgrade this pc.
now the download should start. 
if you got error like "something happened", then do the following
 open control panel > search for region > click on region > click on administrative > chane local> put english(united states) in that and click ok
now run that downloaded file again.
your download should start now.
be patient ... you need to do nothing until it gets downloaded 100%
then some processes start by themselves.
be patient..
in the entire process, it asks your permission thrice only.
You got windows 10 on your PC.
All the best.

If you have some issue/solution, Feel free to share here.

*this is for information only. There is no guarantee that it will work for u.