I cannot finish installing the Sims 4.

I got my Sims 4 today's evening and was all excited to play but i end up with the same problem as most if you guys. Disc 2 wasnt working on my lap top. After figuring out that its not only my problem I decided to experiment and give it a try with my old lap top. On the new one i have windows 8 on the old one window 7. I dont know what's the other difference. Same programs, same software. Both are ASUS. Guess what, my old one made it. So i managed to play the game tonight. I'll try to run it under Windows 7 tomorrow on the new lap top. Will see how it go and if this is what cause a problem. At least now i know that CD itself is fine.