Today my laptop engineer came and guess what he gave a strange reply which just confused me. After clean installing Windows 10 I'm unable to boot any of the Windows ie Windows 7 or 8.1. None of the iso files which includes all the versions of that particular Windows (Windows 7 home basic, home premium, professional, ultimate and enterprise of both 32bit and 64bit) downloaded from a personal blog are able to boot. It just shows an error Windows cannot be loaded. Tried to find out various methods on Google and on Microsoft site but still in vain. If anyone is able to find out the way kindly help.
By the way after refreshing the Windows I felt the speed is increased a bit.