Things I might try: 1. A bootable-CD Linux, say Kanoppix or Gnoppix or Morphix. 2. Compiling a kernel that has NO APM or ACPI support. If this doesn't lock up, it's strong circumstantial evidence that your current kernel is the problem. -- Carl Fink carl@fink.to If you attempt to fix something that isn't broken, it will be. -Bruce Tognazzini