Windows 10: I don't want to upgrade and now can't update Windows 7

Windows won't let me update windows 7 unless I'm installing 10, which is downloaded. I changed my mind because of the stuff I'll have to pay to upgrade and a program that I use daily but won't exist in Windows 10. How do I just remove it?

:)

 

How do I delay Windows 10 installation?

I do want to upgrade, but I'm moving right now and don't have time to mess with a new OS. I want to delay for two months and see no way of doing that. I can't install Windows 7 updates without upgrading. GRRRR!

 

Windows 7 --->10 Free upgrade... Now I want to do a Clean Install

I recently upgraded about 2 months ago to windows 10 from the free upgrade download from Windows 7. I haven't had a fresh install in over 5 years. My computer is so bogged down, I think it's time for a complete clean install on my boot drive. I'm just
wondering if during this process if it will ask for a windows 10 Key. I had the Win 7 key, but can't find it at the moment. I'll have to keep looking. What should I do. If I do a clean install will Windows request a key. And if it requested a key would
my windows 7 version work?

Thanks in advance,

Ben