Getting spurious undo (Ctrl+Z) sent randomly on a Dell laptop

Getting spurious undo (Ctrl+Z) sent randomly on a Dell laptop For the past couple of weeks, my laptop has had a strange problem where it looks like Ctrl+Z is pressed, so I usually lose bits of text I've just typed. If I redo by pressing Ctrl+Shift+Z, the text comes back, proving it's really as if Ctrl+Z was pressed.
Asked by: Guest \| Views: 318

Total answers/comments: 2

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Guest [Entry]

"By trying another keyboard this doesn't mean that the laptop keyboard wont be active, to do so, go the control panel >> system >> device manager, look for ""Standard 101/102 keyboard""(or something like that) right-click and select ""Disable"". (this make your laptop keyboard disabled)

Now, try with your external keyboard, if this problem don't shows up again, this is for sure a broken laptop keyboard, you need a replacement."

Guest [Entry]

"Here's what almost worked:

Power off.
Remove the main battery.
Press the power button a few times, sometimes holding it for a dozen seconds.
Keep doing that all weekend!
Re-assemble everything, problem gone.

This is based on comments found in http://www.selfishman.net/2008/06/24/problem-with-dell-inspiron-1501-keypress-every-second/. Step 4 is what made it work for me.

2009-09-29: Arrgh, after a couple of days without problems, it started again! :-( Still looking for a fix then..."