After losing sound to my eMac speakers, no startup 'bong' (works okay through ext amp and spkrs), and then some quirky Finder behaviour via keyboard, I ran OnyX and Disk Utility firstly to clean up any OS malfunction and secondly to analyse hardware status. In attempting to Verify & Repair, I was presented with "cannot repair volume Mac HD, keys out of order". Most of the eMac functions are working fine, no problem with Applications or Utilities. My questions: 1. what exactly is this K-O-O-O malfunction, 2. what causes it ... and to anyone's knowledge, 3. is it an inherent fault of the MacOS (10.4.11)? This is the second time the event has occurred with this Mac, the previous time a Disk Warrior repair was required, Apple's Disk Utility from the Install dvd cannot deal with it . As the keyboard (a generic PC Chicony brand) appears to be 95%+ functional, the description of the fault seems strange.