Back to the maker and seller to resolve. If they can't then it's a return for refund.
Hello I recently purchased a MSI GE72VR apache pro laptop which has 4 internal speakers/ 1 subwoofer with surrond sound capabilites. It uses realtek HD and niahmic2 audio programs on a Windows 10 operating system. Realtek HD audio Manger will only recognize 2 speakers and is locked into stero mode. I have deleted and installed the latest drivers for both audio programs. It didn't not fix the problem. Any help on this would be greatly appreciated cheers.