I just bought an old IBM M52 8215D1U desktop that the audio doesn't seem to work on. From what I have read, it has an integrated audio chip, which appears in the Device Manager without indicating any problems with it, but the computer has no internal speakers, and plugging external speakers into it doesn't provide any sound. I didn't spend very much time with it running, but on a quick scan, I didn't see any audio control on the Taskbar (XP SP1), and there are no external controls on the desktop. Under the circumstances, I'm figuring that the integrated audio is kaput, but the computer has an empty PCI slot on a riser that should accommodate a sound card add on (see item 12 on the link below). http://support.lenovo.com/en_US/detail.page?LegacyDocID=MIGR-60453 The question remains that since there are no physical audio controls on the computer, and I didn't see any on the OS, how would one control such things such as the volume?