How to do if there is no sound in win8 system

Method 1: If the hardware is not in trouble, check whether the sound device is disabled.
1. First right click on the speaker icon in the task bar in the lower right corner of the desktop. , then select the "play device" option;
2, then right click on the white blank area of ​​the playback device interface, select the "display broken device" and "display disabled device" options;
3, if in There are icons for seeing the speakers and headphones, right click on "Correct Sound Device" and select "Set as Default Device".
Method 2: Check if the audio service has a normal startup
1. First enter "Services.msc" in the running search, then look for "Windows Audio" in the service list;
2, then right click "Windows Audio", then select "Start";
If none of the above steps can solve the problem, please check if the sound card or motherboard related driver is installed correctly.
Method 3: Solve the problem by modifying the registry
1. First on the win8 system desktop, then press the "Win+R" combination shortcut to open the run dialog;
2, enter in the run dialog "regedit", press Enter to open the Registry Editor;
3, then click on the "Edit" column of the editor interface, then click "Find" item;
4, in the Find Target dialog box, enter "Audiosrv" , then tick the whole word match at the bottom of the dialog box;
5, after the search is completed, find the "RequiredPrivileges" item, right click to modify;
6, and then delete the value of the last two items in the data to retain " SeChangeNotifyPrivilege", click OK to solve it.