I have been trying for 2 days to get XPpro installed on a new puter. Initially It installed ok, but before I could set things up there was a power shortage and the power to the house went off and so did the pc. On reboot I got the blue screen error message about unmountable disk. Rather than mess with the thing I just figured I would re-install xp and make sure everything was clean. The problem now is that after all of the startup files are loaded and the puter reboots for the first time to begin setup I get the message : the following files are missing or corrupt replace and restart. <windows> system32/hal.dll I have several machines, so I have several XP disks. I have tried XP Pro, and I have tried XP home. Still, I get the same message. I even took the HD and plugged it into my second puter and copied the hal.dll onto it, then put it back into the initial puter and still I got the same message. Any suggestions ?? I even tried the repair console (there was a previous post in this forum with a suggestion) but Have not solved the problem yet. Win XP pro AthlonXP 1800 Seagate 40g (2 equal partitions) 256k ram I have reformatted everywhich way, nothing worked.