Hello,
I'm currently having issues with the audio on my Dell Inspiron 7720. After a motherboard replacement in an authorized Dell service center, the following thing happened - volume control icon has a red X over it, and it says that no audio output devices are installed. I tried deleting the driver from device manager and reinstalling the one from the Dell support page (the IDT driver for my laptop) but it says that the hardware detected is not supported by this software package. I also used system restore but it did not fix the problem.
I have my BIOS updated to the latest version and I'm running Windows 7 64bit.
Any help would be appreciated, thanks.