What is the Current OS? And what is the eligible Windows 10 that you can upgrade to: Before you startīefore Starting you need to make sure that you have the following information. If you decide to do a clean installation without performing the upgrade for the first time, you will need to enter a product key for Windows 10 or buy a license in order to activate Windows 10. On this same PC by using the free Windows 10 upgrade offer. Your PC will activate online automatically so long as the same edition of Windows 10 was successfully activated before Installation for Windows 10, you won't have a Windows 10 product key, and you can skip the product key page by selecting the Skip button. In this case, if you format the same PC later on to do a clean If you want to benefit from FREE upgrade Option, you must run the setup.exe from inside the Windows 7 / 8, perform the Upgrade and make sure that you successfully activate the Windows 10. If you want to install Windows 10 or re-install Windows 10, you will need to create a Bootable USB Stick or a Bootable DVD for Windows 10. How to Create a Bootable USB Stick or a Bootable DVD:

Windows 10 bootable usb tool