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#1
High CPU, possibly due to audio driver
I originally posted this in the Drivers forum, but I didn't get a response in over two days. I hope you all don't mind me posting this here.
I have a Macbook running Windows 7 64bit through Boot Camp. Whenever I use audio on my computer, either the built in speakers or headphones, the CPU spikes up. Using Task Manager, I was able to narrow down the problem to the "NT Kernel & System" process. The CPU spikes up about 50% whenever audio is used. If I close all the programs using the audio, the NT Kernel process drops back down to 0% like it should. After some searching online, it seems like this might be a problem with my audio driver. I checked for recent driver updates and then tried to uninstall and reinstall the drivers, without success. My audio driver's name is Cirrus Logic CS4206A (AB84) if that helps, and I have version 6.6001.1.39 installed.
I've dealt with this problem for several months now, so unfortunately I can't trace the issue back to the installation of a specific program. It might even date back to when I installed a new hard drive which I believe was January last year. I tried narrowing down the issue through the use of KrView and xperf, but those programs don't seem compatible on my computer. They load the Command Prompt screen and then close a split second later.