Mark Hahn wrote:

we (and the vendor) regard this as grounds for repair (usually
the power supply).

I backup what Mark says.
a) attach a console to the machine, either a serial line or a monitor/keyboard

b) run memtest on it, followed by CPUburn or some other compute-intensive task for a day or two

c) ask your vendor for support

You mention a BIOS upgrade - get through to technical support for your motherboard manufacturer, and get a clear statement of exactly what the BIOS upgrade does. Have memory timings or something changed - and check thet your memory is supported on that motherboard.



--
     John Hearns
     Senior HPC Engineer
     Streamline Computing,
     The Innovation Centre, Warwick Technology Park,
     Gallows Hill, Warwick CV34 6UW
     Office: 01926 623130 Mobile: 07841 231235
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