We are running a P3 600 MMX with a SUPER MICRO DUAL CPU& SCSI motherboard. There are 3 9gb SCSI hard drives with windows 2000. I have just upgraded the memory from 256mb to 768mb (PC 100). Every time the system is re-booted, the boot up hangs after checking the memory and finding the CD-ROM. If I remove the memory and go back to the original 256mb, it boots up without a problem.
I am now finding that if I go into system setup at the startup and wait ( and don't touch anything) it will then boot up as normal.