Volume Control Not Working

[cuthbec]

The master volume control on my laptop has stopped working. If it is set from 1 to 99%, it is on at full. If it is set to 0% or mute, it is off,

I have tried stopping and restarting the services, restarting the PC, updating the drivers, deleting and reinstalling the device, rolling back the BIOS to a previous version, resetting the PC while keeping my files, doing a full rest of my PC. None of these has made any difference.

If I go to Settings, System, Sound Mixer, I can change the volume of each app and that works fine but the (master) volume slider does nothing except mute the volume when set to zero.

I contacted HP who referred me to Curry's who are their support agent and where I bought the laptop. They said that this model is blacklisted by their repair centres so they won't help.

I have run out of ideas and options. I use my laptop for live events so volume control is essential 

Does anyone have any suggestions as to what I should do, other than buying a new non-HP laptop?

[SpikeTheHat]

Cuthbec, use Driver Booster 10.1 free edition to get all the drivers up to date. It worked for me.

[helios3]

same problem.....