LAST EDITED ON May-20-01 AT 02:29 PM (GMT)What's in the PB? What is the model # of the Compaq? What is the number following the + on the PB manufacture's label? Running Intel’s CPUID (http://www.ee.und.ac.za/DataCDs/Intel/DESIGN/PERFTOOL/CPUID/UTILITY.HTM and http://developer.intel.com/design/pentiumii/applnots/241618.htm ) on both computers may provide useful info, assuming both processors are Intel. Larry