Question : Problem: Hardware Interrups - High CPU usage

We have a problem with one of our products. In below zero temperatures, once Windows XP is loaded, the hardware interrupts are consuming 50% CPU. This can be seen in Sysinternals Process Explorer.

Does anyone know of a program that will give even greater detail of what is happening? Is 'resetting' IRQs possible through for example a WMI script? A software solution would be great as we have over 200 units out with customers. We are also looking into a BIOS fix, though even if this will solve the problem, flashing the BIOS is a more complicated procedure for our customers.

Any input is welcome!

 

Answer : Problem: Hardware Interrups - High CPU usage

I think you will need additional heating pads for the other components.  The need to completely shut down before the problem can be corrected is an indication that a circuit has gone into a state where software is unable to fix it, and even a warm reboot does not clear the state completely.  Your temperature sensor may be too far from the problematic circuit to help keep it in the desired operating range.