aston786 :
Satellite p70-A Sound suddenly not playing.
I think that it is related to last updates to Win 8.1
Conexant SmartAudio HD
Open speaker properties, "failed to play test tone" response.
Drivers updated, according to checks everything is working properly.
Try this...
1. Right click on your speaker icon in the bottom right of your computer screen
2. Select
Playback Devices
3. Select your sound card and click properties
4. Select the Advanced Tab, click Restore Defaults, and then click Test button
Hope this Helps