i have an envy dv6 windows8. the problem is that i can't listen to cd's or dvd's but online audio and audio saved to my computer works fine. also i noticed that under sound in the control panel it says that i have no audio devices or recording devices installed. i checked my device manger and it says that my drivers are all working, enabled, and up to date. so, my question is whats going on and can i fix it?