Use this steps and let me know if it worked !
1. Press “Windows”
+ “R” keys to load the Run dialog box.
2. Type “services.msc” and press Enter.
3. From the Services list in the right pane, check if the “Windows Audio” service is “Started”.
4. If the “Windows Audio” service is not started, then:
a.) Double click to open “Windows Audio” properties and set the “Startup Type” to “Automatic”.
b.) Click “OK” & restart your computer
5. After the restart, check if your Audio card is working now, otherwise continue to resolve the error by following the
step below.
Delete Sound Card’s invalid registry keys.1. Open Windows Registry Editor. To do that:
a.) Press “Windows” + “R” keys to load the Run dialog box.
b.) Type “regedit” and press Enter.
2. Inside Windows Registry, navigate (from the left pane) and highlight this key:
HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Control\Class\{4D36E96C-E325-11CE-BFC1-08002BE10318}
3. At the right pane click to highlight the “UpperFilters” key.
4. Click the “Edit” menu and select “Delete”.
5. Perform the same action (Delete) with the “LowerFilters” key, if found.
6. Close Registry Editor.
7. Restart your computer.
8. Now check if your sound card works.