pitypartysimmer Please try a different sound output device, for example built-in speakers vs. headphones connected via jack or USB.
MeggleMonster Your issue sounds different. The OP's issue is common on very old graphics drivers: most objects don't get rendered unless you mouse over them. With your save, it sounds like the house actually disappeared, not that it's present but not displaying correctly.
What you can try now is refreshing your user data. It won't bring back the old data but may help prevent this in the future. Go here:
C:\Users\your username\Saved Games\Electronic Arts
and move or rename the Sims 25 folder. This will remove all save data, and the game will regenerate the folder and its contents the next time you launch it.
If you want to recover your old sims, we can try restoring some of the data within the old Sims 25 folder, but to be honest, I don't know whether it would work or even if it's a good idea. Since I can't tell you the extent of the corruption, if that's what it is, you might be reintroducing the problem to the new folder.