Okay. So recently my brother downloaded a trojan virus on my computer by mistake. After we rebooted the computer, we noticed that we didn't have audio. After several attempts to find the disk that contained the driver, we ended up looking online for it. After searching for a while I discovered the driver on Microsofts website and downloaded. This didn't fix the problem however as, for some reason, my computer does not allow me to use it still. It says the status of the driver is "Enabled but not Functioning" and when I click settings it tells me that it "Cannot Locate Realtek AC'97 Audio Drivers. The driver file may be missing. Try installing the driver again or contact your systems administrator." I've re-downloaded the driver multiple times now, and it hasn't worked. Any help with this issue would be appreciated.