systemboard lockup of windows

Check in the bios to see if there are any themal warnings and actions set. This is especiallly crucial with 300-400mhz chips as they dissipate more energy in the form of heat. Some boards are now comming with heat alarms that are set for normal operating temps. If this is the case find the normal heat range of your processor and set the bios correctly. Intel has good heat info on there chips at their website

Try operating the computers in DOS mode first, if they still lock up after runnign a program in Dos Safe mode it is a thermal issue, if it only locks in windows it is most likely a drivers issue.

it sounds like a windows problem since you having the exact same problem with 2 motherboards and 3 processors. boot in a safe mode and make sure drivers are ok. for jumper settings go to http://www.prosystech.com/hohweb/manuals.htm
and for bio and drivers updates go to http://www.compamerica.com/drivers/classfmb.htm
good luck

This has happened to me before.... check your memory, make sure they are the same and seated properly, my solution was to pull out the memory and clean the contacts...

I hope this helps

If you are using them for a parallel setup and the way you have discribed it, they are , you are likely using two different types as the P code shows, better to use them as separate processors , and use Raid drives on each, i have a link I will giveyou if this is the case, to show you how. Likely you will never correct the mismatch, unless you understand the voltages and the way it effects speed, if you were to get them going they would operate at the slowest speed of the two , the same as with Hard drives

Like mentioned previously make sure you have the proper heat ditribution devices, ie heat sinks and fans and are working properly. If that is OK make sure the system board is compatible with the memory you put on it, just because it fits does not mean it is compatible. Check the system board manufacturer's web site for compatibility issues for memory and for power supplies if not noted in the manual for the board.

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