Originally Posted by Nothinman
Did you try running perfmon from another PC? It's most likely some scheduled task, I believe you can set a trigger for something to run when a PC sleeps/resumes.
Perfmon shows that something is spiking. Unfortunately, that "something" is running within svchost, as are about half the processes on my PC. Since perfmon doesn't track the PID of a process (only the name), I have no way of knowing which svchost instance is misbehaving without interacting with the computer. Unfortunately, the instant I do, the behavior stops.
I also tried using Process Explorer, but for some reason, it doesn't graph the CPU usage of individual processes other than the System Idle Process.