I've been playing Morrowind on my laptop for a few weeks without any issues but a few files somehow went missing.

Right after the game loads I get a message, "Sound file not found: data files\sound\fc\envrn\fire.wav"

When it asks if I want to continue running I click "yes" but the screen keeps popping out and I cannot leave my inventory screen. If I click "no" the game exists.

How do I restart the game to include these files?