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My Acer randomly BSOD with PNP error and after restart I have no sound and I get a red x on my speaker icon in the lower right corner where the clock is. I checked the Device Manager and I get a yellow exclamation mark under System Devices and it seems the problematic device is Intel(R) Smart Sound Technology (Intel(R) SST) Audio Controller. Under Sound, video and game controllers I have only one driver left - NVIDIA Virtual Audio Device (Wave Extensible) (WDM). When I click View --> Show hidden devices it shows the audio drivers which means they are disabled somehow, I think?
Anyhoo, I've updated the problematic driver and hoped that this solved the issue but to no avail. I'm afraid to uninstall the driver because it's under System Devices and not under Sound, video and game controllers categories. I am starting to think it might be an hardware issue, but I seriously hope not.
Perhaps you have some ideas what I could try to fix this?