|Sorry, I'm not sure what kind of information you need.|
The two in question are in the folder Program Files (x86).
They're both Application files in the Steamapps folder.
For the games Might and Magic and Back to the Future. I'm sure there are plenty of other affected but I haven't really tried playing anything else.
I played them both for months but now they don't work.
I asked Steam for help and they told me a couple of things to try which didn't solve the problem and then said they're third party games and I'd have to ask the game companies.
If you need any other information let me know.