Windows 10 came with lot of inbuilt features one of the them is reset pc, this is very useful tool if you want to restore or reset default windows OS without using any ISO USB pen drive or dvd, there are to options in reset; one is reset without changing personal files but it will remove apps, and setting other one is remove everything apps, files, setting; so let is how to refresh or factory reset windows 10 pc (do it on your risk)
1. Go to “system-setting” select “recovery” click on “Get started”
2. Choose “keep my files” if you want to save your files, but apps, and setting will be removed, you can also go with second option “remove everything” this will remove files, apps setting and everything. But here I am gong with “keep my files”
3. This is list of apps will be removed, now click on “Next” and “Reset”
4. Now relax let it do its job, your pc will restart several times, it will take few minutes, finally you will get desktop screen.