While Microsoft has officially ended mainstream support for Windows 8, you can sometimes still find recovery images through official channels if you have an existing product key. 1. The Official Microsoft Route
Since original Windows 8 ISOs are no longer readily available from Microsoft, your best official option is to download Windows 8.1 download windows 8 iso file 64 bit activated
If you've obtained a legitimate copy of Windows 8 (preferably 8.1, as it's more commonly supported), here's how to activate it: While Microsoft has officially ended mainstream support for