The Win7 or WIn8 to Win10 forced FREE upgrade has been discussed on here for months and months. One must turn off "automatic upgrades" and have the computer request your approval to do so, or this happens.

I also learned from Adobe tech support a month or so ago that if your Windows 10 is an upgrade that Adobe products on your computer won't likely work with it and you'll have to call for assistance and possibly reload the software that's not working BUT if you have a clean new Windows 10 that came on a new computer the Adobe products are 99.9% sure to work perfectly when you load them.

Several people on here have had problems with upgrading their Win7 or Win8 to Win10 and ultimately had to return to their original OS (although a friend of mine tried that with his Dell and it really messed up bad). Yet there are people on here who have had NO problems with upgrading. So get ready, and be prepared, to have some or all non-functioning stuff when it's over.

The PC I'm using right now is Win7 and I didn't let it auto upgrade. But I bought a newer, faster, better equipped model of the same Dell about 5 weeks ago and it has Win10 on it from the factory. It has worked virtually flawlessly since I got it. BUT... Dell keeps throwing update notices at me, one of which is a BIOS update. I don't really like to mess with BIOS, especially since the last update sat with a black screen for 26 hours and didn't reboot like it was supposed to. The update said DO NOT turn your computer off during the BIOS update because it could become completely inoperable, so what was I to do? I went ahead and turned it off and had to restart it with the power switch twice but it fortunately came back fine.

Win10 is known for updating itself regularly and it's hard to get it to stop doing that. It doesn't care if you're working on the PC at the time or not. That's a bit irritating but Win10 works quite well otherwise.

I just had to have my desktop computer worked on, and the technician asked me if I was going to upgrade to Windows 10. I said no, as I'm perfectly happy with Windows 7 Professional, and I still remember Windows Vista and Millennium. He showed me in the registry where Microsoft places an instruction to allow it to upgrade without your permission. He deleted it, and the little icon in my Windows Task Bar wanting to upgrade it disappeared. I haven't been bothered with notifications about upgrading to 10 since then.