No Audio Device Installed? - Restore Sound on Your Computer Quickly

No audio device Installed? 2) Check Device Manager
a) Right click My Computer and then Properties. Click Hardware Tab and Device Manager.
b) Check "Sound, video and game controllers" item. 3) Reinstall/Update Audio Card Driver
In fact, up to 60% of the "no audio device installed/found" errors result from damaged or corrupted sound card driver. You need to reinstall and update the sound card driver to fix the problem.
No Audio Device Found? - How to Fix "No Sound on Computer" Problem Quickly
No audio device found? If you are using a independent sound card, you can skip to Step 2. Find audio card(AC97 Audio) and set it to be Auto or Enable. 2. Examine Device Manager
1) Right click My Computer and choose Properties.
2) Examine "Sound, video and game controllers" item. 3) Reinstall/Update Your Audio Card Driver
Up to 80% of the "no audio device installed/found" errors are caused by outdated or damaged audio card driver.