Question Missing 7.1 Surround Sound

[Amirulysoff]

hye guys, i have a problem which is i cannot find any option or device 7.1 surround sound, its like my computer cannot detect it. Before this problem happened, i configure and setup my headphone 7.1 surround sound, but i accidentally uninstall 7.1 surround sound driver on my device manager, and i restart and uninstall 7.1 surround sound software by razer. But i still cannot find the missing driver or device cannot detect. Im using Razer Kraken X