Did you ever find a fix for this? I have the exact same problem, running XP Pro SP2. It doesn't seem to have a negative impace on anything, but it bothers me to find device problems.
Thanks,
Scott
Running Win XP Pro SP 1---
When I open Device Manager and view hidden devices, PartMgr has a yellow exclamation point. What is partmgr and how do I fix it?
Properties for PartMgr: Device Status---"This device is not present, is not working properly, or does not have all its drivers installed. (Code 24)"

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