Hey guys

bare with me here.
I recently downloaded this music mixer thing, it was fun and all but just got bored of it so i uninstalled it. It uninstalled perfectly everything was all good. Couple hours later i wanted to watch a movie and my disc wasn't playing so I'm like "hmm maybe the disc is broke" so i checked and put in another disc, and that didn't work either, couple minutes later i have gone threw all my discs and I'm guessing "they all cant be broken?"
so i looked on the web for Solutions and nothing helped. i think its my CD/DVD driver, that's what i kept seeing come up. I really hope its not tho because i would hate to replace it, because its a brand new computer sorta 2 years at max probably. so please if someone could help me with my problem i would really appreciate it.
Thanks in advanced!