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The Laptop is an HP EliteBook 8540p running Windows 7 Professional. OS updates are applied regularly via Windows Update and the machine is currently fully up to date.

Recently, when undocking the laptop it has started initiating the shutdown sequence. The "waiting on applications to close" box pops up so it can be aborted if caught quickly enough.

I can't find anything in the power configuration related to docking/undocking and google hasn't proven very useful either. Has anyone ran into this problem and figured out how to resolve it?

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Have you tried a System Restore to a point before this started happening to see if it still does it? Anything new/suspicious in the Task Scheduler? –  Ƭᴇcʜιᴇ007 Nov 23 '11 at 19:17
    
Have you checked HP's site for driver/firmware updates? Possible something Windows Update changed will be fixed by updating them. –  CharlieRB Nov 23 '11 at 20:12
    
I'll check and see if there is a new BIOS update available, I know HP puts those out pretty regularly, perhaps an update caused an issue that they resolved there. –  Melikoth Nov 23 '11 at 20:49

1 Answer 1

I finally stumbled across something that seemed to work, though it was for a newer model HP elitebook running Win 7 Pro 64-bit.

In this case, the 'Power Options' settings options seemed to trigger the 'when I close the lid' action upon being undocked. I changed it Sleep, saved changes, then back to Do Nothing and saved the changes. At this point the laptop behaved as expected during the undock.

I tried this because I noticed that the lid close event seemed to be firing, despite being set to Do Nothing. It looks as though the value it reads to display the setting may not be the same value that is looked at to determine the action, and that they somehow got out of sync.

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