My computer had never had a problem with sound. It always worked great. In February, my sound somehow stopped working, and we could not figure out how to fix it. Here's some info Computer Type : Acer Aspire T100 Sound : Realtek AC'97 Here's what I do Control Panel > Sounds, Speech, and Audio Devices > Change the Sound Scheme . On RealTek AC'97, it says Manufacturer : Realtek Location : PCI Bus 0, Device 31, Function 5 Device Status : Windows cannot load the device driver for this hardware. The driver may be corrupted or missing. (Code39) I just want my sound back. Any help?