Hi, everyone. I'm really stumped on this one. Problem: No sound device found. I have installed the Realtek driver on an ASUS motherboard, sound on board--identical to the driver and motherboard I have on another computer. I tried to uninstall it but I got the message, "Failed to Install. The device may be required to boot up the computer." All drivers are enabled. In the BIOS, the on board sound is enabled. I tried disabling it after removing the driver. No luck. I tried taking the driver out of the Driver folder and reinstall the newest Realtek driver and software (identical to the other computer) , but that failed. I removed the Realtek driver and other Realtek components through another item in the Device Manager: Legacy. After rebooting I tried to reinstall the Realtek software and drivers but it failed to install. So I disabled the Microsoft UAA Bus Driver for High Definition Audio, then the driver and software installed. But I'm back at square one. When I look at the properties on the OTHER computer, it lists for the driver: Driver Provider: Realtek; Driver Date: 3/26/07; Driver Version: 126.96.36.19991; Digital Signer: Microsoft. But on the computer with NO sound, the Driver Provider, Date, Version, and Digital Signer are all missing. So, if the device is required to boot the computer, cannot be uninstalled, and the driver isn't signed (though the same driver is signed on the other identical computer), what do I do now to get sound on the computer? Thanks for putting up with my long message.