which windows 10 version should i install. i have windows 8.1 core single language installed in my laptop (HDD) pls suggest. and i want a clean install in my new ssd.
You need to upgrade 8.1 to 10 before you can clean install or you wont be able to keep activation Mount the ISO, click setup.exe and it will install Windows 10 Home, during install keep your internet connection on (it will need it for sending activation info to activation servers). When and if it asks for a key, SKIP adding the key. After Win10 Home is installed and activated (it retrieves the activation info it collected during your initial upgrade from activation servers), you can then clean install whenever you need without a key, it will always get your activation from the activation servers BUT! to clean install, It must be upgraded (only need to upgrade 8.1 ONCE) and activated first. Another option that does great for clean install is "Reset this PC" you can type that into the search bar next to the start button in Win10 and it will do a clean install for you, much faster too. I think I got it all covered? I miss anything, speak up peanut gallery LOL
Just a small correction (based on 8.1 Pro to 10 Pro). Key should not be required for upgrade. Just mount iso in win 8.1 and run setup.