This topic is meant to be informative to people with Windows 10, who might be having issues with The Sims 2 (and expansions). Firstly it is confirmed by Microsoft that Windows 10 is not compatible with Securom.
Some people can get The Sims 2 to run fine on their Windows 10, but some people are having issues.
This is just one issue to look into if your having problems but this isn't a cure all. If you are still having issues after removing the Securom from your game/computer you may also need to take additional steps to fix up your game. Also it's been confirmed that the new Sims 2 Ultimate Collection threw Origin (fixed for windows 8.1) also includes Securom. So whether you are installing with Disc or Origin whether on Windows 8.1 or 10 it is best to remove Securom from your game/computer.
First you have to go to the Securom Support site and downloaded the Securom removal tool.
This automatically removes Securom from your computer and from The Sims 2 game. It does leave one thing called Securom License Information in the registry, claiming that because I was currently logged onto the user it couldn't remove it.
So I then went and downloaded a program called TrashReg http://www.trashreg.com/rtkf_eng.html
After downloading and installing it, Run the program. It will pop up a huge list of registry keys...Don't touch any of that instead go to the top menu bar and click File>Search NULL-embedded Keys... A box will pop up which by default has a checkmark in HKEY_LOCAL_MACHINE and HKEY_LOCAL_USER. Just leave those selections and hit OK. It then scanned and popped up the Securom License Information which I right clicked and deleted.
Now that you've removed all the Securom from your system you have to download a No-CD .exe for the latest expansion you have. For The Ultimate Collection that would be The Sims 2 Mansions and Garden. (File must be placed here for The Sims 2 Mansions and Garden threw Origin) C:\Program Files (x86)\Origin Games\The Sims 2 Ultimate Collection\Fun with Pets\SP9\TSBin
If you do not download a No-CD .exe and you end up running the game normally Securom automatically reinstalls itself onto your computer. However the No-CD .exe bypasses this and you can play the game Securom free and it runs great!
As I stated if you've removed Securom from your computer and your still having issues with The Sims 2 you might have to look into other things like graphics and whatnot. This procedure also works for Windows 8.1