It is nearly 4 months since I have started using Lenovo Y550. It fulfills my entire requirement. There is still one feature lacking that I cannot able to use the subwoofer yet. It is only when the computer is running with Windows 7. In other OS like previous vista I never had this issue. The Home theater button or function is not enabling in Windows 7. I cannot hear any sound and the system contrast also doesn’t changes at all. Please tell me how can use the full experience of this function?
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