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laptop freezes when plugging and unplugging AC power adapter

Discussion in 'Hardware' started by neil1967, Mar 2, 2011.

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  1. neil1967

    neil1967 Thread Starter

    Joined:
    Dec 8, 2010
    Messages:
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    I have a Dell Vostro 1400 running Vista Home Basic and have had two periods in the laptop's existence where it would mysteriously freeze. You could see everything on the screen, and the power lights were on, but it would not respond except to a hard reboot by holding the power butting down for 5 seconds.

    I am going through one of those periods now, and have discovered that the problem happens when I am either plugging or unplugging the AC power adapter, but don't know why. I have been all over the web for a solution, and while it does seem I am not alone with this problem, I have not read a sensible solution yet. My favorite bad answer is "don't unplug your laptop when it's on."

    So, does anyone know what it could be? I wanted to look at system logs, and so went into the Event Viewer not even sure what to look for, but didn't see anything that looked like a likely culprit. Please help!

    Thanks,
    Neil
     
  2. raybro

    raybro

    Joined:
    Apr 26, 2003
    Messages:
    5,835
    being a member of the Dell Community Forum, I looked there and found this

    A lot things happen in Windows when inserting the AC power adapter.

    To check if it's a classic CPU lock-up: repeatedly press capslock. If the capslock light doesn't change, there's no live in there.

    Assuming the CPU is locked up: It's possible there's a log entry in the system log just before the AC power adapter is inserted. These entries give clues where to look, just before things went sour.

    Next try to reproduce it in Safe Mode (press F8 when Windows start) If it's also in Safe Mode - try running an alternative OS (no need to install)

    If the problem also shows up here - most likely it's a hardware issue.

    Otherwise it's a windows issue - might be driver related.

    the "alternate OS thing is a link on the forum web site. Click here to go to that site.

    Hope this is some help... Raybro
     
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