I have dell Optiplex GX620, I have installed windows 7 but it shows that no audio output device is installed. I even changed my sound card, but no use. I have visited many hardware shops as well to repair it but no one could find any problem.
so is there any hardware to attach externally to resolve this problem??
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If you look in your device manager, do you see any devices with a yellow symbol, any device saying unknown hardware, or any devices under audio devices?
Trying to establish if you have a sound device installed.
Also, the dell's have a tag# on the device. You can hit the …
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