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XP System process using 99% CPU

A client complained that their mouse (USB) was not working and PC was really slow. Looked at the processes and found the SYSTEM process was 99%. Search on the Internet and found some others had the same issue with USB ports causing the problem. For me I changed the USB ports in the Intel motherboard to not use 2.0. The USB ports did work fine (only running at the USB 1.1 speed). I also could install a USB 2.0 card and it worked fine.

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