Upgraded W7Pro64 to the “Insider Preview” of W10Pro64 and upon the final release of W10 my desktop was still broadcasting I was running the Technical Preview and the system was sluggish to say the least.
Since you don’t have a product key of Windows 10, follow the instructions in the next step. Step 3: While installing Windows 10, you will see the following screen, where you are asked to enter the Windows 10 product key. Step 2: Prepare bootable USB of Windows 10 or prepare bootable DVD of Windows 10, and boot from the bootable media by making appropriate changes to the BIOS/UEFI. Step 1: Download Windows 10 ISO from Microsoft using the Media Creation Tool. Here are steps you need to follow while clean installing Windows 10: Clean installing and activating Windows 10
That is, you don’t need a product key to clean install Windows 10 on your current PC as long as you have upgraded from Windows 7 or Windows 8.1 to Windows 10 and successfully activated the same before performing a clean install of the same edition of Windows 10.įor example, if you have upgraded your Lenovo computer from Windows 7 Ultimate edition to Windows 10 Pro (Ultimate edition users are automatically upgraded to Windows 10 Pro as part of the free upgrade) and successfully activated it, you can perform a clean install of Windows 10 Pro on the same Lenovo machine by wiping the hard drive, and you won’t need a product key to activate it.
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