Before you update / upgrade / custom install Windows 10 on your computer, Please make sure, you know your machine product id / product key and note it on paper or anywhere safely.
ProduKey is a small utility that displays the ProductID and the CD-Key of Microsoft Office (Microsoft Office 2003, Microsoft Office 2007), Windows (Including Windows 7 and Windows Vista), Exchange Server, and SQL Server installed on your computer. You can view this information for your current running operating system, or for another operating system/computer – by using command-line options. This utility can be useful if you lost the product key of your Windows/Office, and you want to reinstall it on your computer.
Download #Windows10 Bootable ISO Installer Original disk image FREE 29 July 2015https://blog.techzost.com/