Sounds and audio devices in control panel say no audio device?

Bummer, sounds like yo need to install a device driver for your soundcard.

If you have a brand name PC you can probably get it from the manufacturers website. If you don't then you'll need to find out what model soundcard you've got. Download Craig Hart's PCI32 diagnostics to find out.

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The problem probably started due to driver incompatibilities. I had a similar one when I installed a new graphics card and updated drivers.

Start up your computer and go to your BIOS (hold down the key to go to 'Setup').

Go to Onboard Audio and switch from Auto to Enabled (or perhaps viceversa).

This is what worked for me. Credit goes to the good people at the Nvidia forums. Good luck.