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Sony VAIO laptop "No Audio Output Device Installed"
Warning, I am NOT a computer person at all, but have spoken to some and tried several repairs. I have a Sony VAIO VPCEA24FM laptop, running windows 7 64-bit and the sound has randomly stopped working (made no changes to anything that I know of). There is a red circle with an x in it on the volume icon on the taskbar, and when I hover over it it says "No Audio Output Device is Installed." However, when I open the device manager and click under sound controllers, Intel (R) Display Audio is listed and if I click on it, it says this device is working properly.
I tried to update the drivers and it says I have the most up to date. When I open sound on the control panel it says no audio device is installed and even when I right click and click "show disabled devices" nothing is shown. I have tried microsoftfixit, and it doesn't help. I have also tried to download the Realtek High Definition Audio Driver from the Sony website, and it downloads and installs and then a window comes up that says it may not have installed properly, and asks, "reinstall with recommended settings?" i click ok and it gives me a message that says, "This update can only run on Microsoft Windows Vista, Microsoft Windows 7" and all there is is an "ok" button, which i click, and it does not reinstall. HELP I'M AT MY WIT'S END!