Laptops forum

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Laptop display goes black when disconnecting AC cable

by Josh K / June 5, 2008 2:28 AM PDT

I have two different Dell laptops, one for work and one is my personal computer. The work computer is a Latitude D620. The personal computer is an Inspiron 600M. Both are running Windows XP, SP2. At work I use a port replicator; at home a simple AC power cable.

Occasionally -- not always but sometimes -- I will either undock my work computer or disconnect the AC cable from my home computer and my laptop display goes completely black. The only way to resolve it is to force a shutdown and reboot the laptop.

Since it happens with two different computers and is random on both, my first thoughts were some sort of XP problem. Has anyone experienced anything like this? The batteries on both computers are fine.

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by R. Proffitt Forum moderator / June 5, 2008 3:38 AM PDT

But the OS install was not from its maker so we had to walk through all the drivers from motherboard to video (about 10?) to check if they were current. Sadly, today's IT staffers seem to click on Update Driver buttons. When I see that I click the Update Staff button on the HR Home Page.

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Update Driver
by Josh K / June 5, 2008 4:04 AM PDT
In reply to: Yup.

MS never seems to point me to the most current drivers. I get them by going to the manufacturer's web site. I'll check the display drivers on both computers and see what that does. Thanks for helping confirm my suspicion that it wasn't a hardware problem.

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Here's an example 10 driver list.
by R. Proffitt Forum moderator / June 5, 2008 4:07 AM PDT
In reply to: Update Driver
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by Josh K / June 5, 2008 4:56 AM PDT

I just upgraded the graphics driver and will wait to see if that resolves the issue. Since it doesn't happen every time I undock/disconnect it may be a week or two before I know.

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