not sure which forum to put this in but this one seems fairly applicable
the problem would be the computer shutting down when the cpu demand gets higher, it gives no warning and seems like it doesnt care which program is running.
now, ive already had several people look at it in similarly baffled ways, all deciding its a temperature fault/build up of some kind of either on either the motherboard or the cpu.
several things we've tried already include changing the thermal paste, which didnt help, using many more fans to build up an air circulation to enable far more efficient cooling, which did nothing.
i bought the system as a motherboard bundle about 3 weeks ago now from novatech (based in the uk) the motherboard is a winfast nf3250k8aa and the processor is a amd64 3400, with 512ddr ram. i also have a geforce fx5500 256mb 8xagp graphics card which may or may not be useful information.
i would very much like to know what exactly to do about this to make my computer work as at the moment i cant do any work on it for fear of not being able to save it in case it shuts down again.

thanks for any help you can give
daniel

"with 512ddr ram."

What speed? 2100,2700,3200???

YO

There are a couple of possible reasons for this.

You installed and updated the chipset driver for your mainboard ???

Power supply:
Check if the additional P4 4 pin power connector is correctly connected to the board.
another possible reason might be a weak power supply. At high load the computer needs additional power and if the psu can't supply enough the computer may just restart or shut down.

Ram:
A bad ram may also cause sudden crashes. If only one or a few bits are bad the problem will only show up if that/those bits are used so the computer may usually run stable but crashes at unexpected moments.

Back to heat:
An overheating Athlon64 is not impossible but usually not that likely either. But if the computer is usually running inside an enclosed space it may cook in it's own exhaust heat.
I friend had his computer inside a special computer compartment build into his desk. The only problem was that this compartment had no ventilation and even a glass door at the front side so it grew hotter and hotter while running.
Or if the crash happens especially at gaming the graphic card running hot might be the reason!

Hope that helps!

Free Weasel,

"Check if the additional P4 4 pin power connector is correctly connected to the board."?

AMD 64's use that?

YO

What is the spec of your PSU ?, especially the amp distribution on the +12v rail.

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