I have an HP Pavilion 061. X86 based pc. Windows 7 Ultimate, Service Pack 1. I don't know much about computers, but someone gave me this computer a while back & when I installed Windows 7 on it recently, the sound stopped working. Not even a headset. I don't have any cds, so I don't know what to install. But it says Multimedia Audio Controller not installed. I went into system information & problem devices and this is what i got: Multimedia Audio Controller PCI\VEN_13F6&DEV_0111&SUBSYS_011113F6&REV_10\4&254543F0&0&28F0 Error code: The drivers for this device not installed. I don't know what drivers I need. Please help!