To go back a little till it works. Here's how.
http://www.bleepingcomputer.com/tutorials/windows-8-system-restore-guide/
Hello, all of a sudden my volume on my laptop stopped working. Even headphones or speakers that are plugged in wont work. I scroll over to the volume control, which now has a red circle with a white cross in the middle, and it says no audio output installed. I have tried many many things, been researching for days. I tried disabling and re-enabling, i've tried uninstalling and going to the main factorys website to manually instal the sound drivers(Realtek audio), and still nothing. My computer is a gateway laptop, NV574. I am now running windows 8 instead of windows 7 64-bit. I've had windows 8 for a year, and everything has been working properly until now. Can someone help?

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