Here it is. I reinstalled windows and then found that i don't have the installation disk for my sound card. I appear to have a Realtek AC97 soundcard. I THINK the model number is ALC655. I read it off the actual insides of my computer after opening the case. After reading this - "We are a chip supplier, not a card manufacturer. Please read the model number of the audio controller chip on your sound card. The model number starts with "ALS" and a number follows (e.g., ALS120). With the model number, please find out its corresponding drivers at http:etc." on the Realtek website, I opened the computer up, read the model number and then followed the link which proved to be useless. It gave me some nonsense about the document being unavailable or something. I know virtually nothing about computers so i'm pretty much drifting on a sea of despair at the moment. If anyone can furnish me with some advice i'd greatly appreciate it. My PC is..... Advent T9107 Soundcard - Realtek AC'97 Soundcard model number - ALC655 The model number might be wrong because in my ignorance of all things computer i might have read the wrong number from the wrong bit of the inside of the machine.