NC6230 heats up and shuts down quickly

If anyone can please help so I dont spend anymore money on this.LOL I have a NC6230 that would overheat and shut down after half a minute of so. I went on EBAY and purchased two other boards and I have the same issue. Thinking I couldn't have 2 bad boards with the save issue I purchased a curcuit board. Same issue. I tried another known good processor with the same results. I tried swapping memory with no success. All of these tests were done with the power supply for power and no hard drive or OS. I then powered it on with the battery only and it stayed running. I powered it off and restarted with a external keyboard to check the BIOS and it overheated and shut off in 30 seconds. No clue what else to try. Is there a defect in the board which provides too much power to the board causing the shutdown? Is this a defect in this board over time?
Thanks for any help
Kevin
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Could be that the coolant is not working correctly.
A typical heat pipe consists of a sealed pipe or tube made of a material with high thermal conductivity such as copper or aluminium at both hot and cold ends. A vacuum pump is used to remove all air from the empty heat pipe, and then the pipe is filled with a fraction of a percent by volume of working fluid (or coolant) chosen to match the operating temperature. Examples of such fluids include water, ethanol, acetone, sodium, or mercury.
You can read the hole article at http://en.wikipedia.org/wiki/Heat_pipe .
Not sure the life expectancy of the fluids.
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Message was edited by: DerVogel

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