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I keep seeing it with Process Monitor software:

enter image description here

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Usually due to driver problems, you should never see that much cpu usage for interrupts,. see… – Moab Aug 13 '11 at 14:15

It's not a real process (it doesn't even have a PID) – it's just the way Process Explorer shows how much of the kernel time is spent handling hardware interrupts.

Also, your ProcExp is outdated.

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Its a hardware process that runs below the software level, which is why no pid. – Moab Aug 13 '11 at 14:16

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