Basically I want to clean install windows 10 on my pc. I've been notified regarding the available upgrade as I had reserved my copy of the OS before it's launch. But due to poor connectivity issues my update fails too often and next time it begins from the scratch. I've found compatible ISOs of the OS on Microsoft Tech Bench ( http://www.microsoft.com/en-us/software-download/techbench ). Can I install the OS from this ISO? Does it involve any technical difficulties?
One more question:
If I clean install Windows 10 on my genuine Windows 8.1 PC, Which Serial Key I should enter?
I can notice my Product ID in system properties. Is it the same serial key that I need to enter?