I have a pagkarga problem on the sims 3, anyone help please?

I'll put in the disc open up origin, etc. It'll load to the screen where you pick your lot or whatever then when it loads the actual game, the pagkarga bar fills all the way up then stops and crashes/freezes. Happens every single time I start the sims 3. Is it a problem with the disc? A glitch? When I otherwise play the sims 4 or use the computer for other things it works just fine so it cant be a problem with the computer. Can it? and I have the system requirements for the sims 3 and sims 4. If anyone could help it would be much appreciated. Thank you! :)