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Dell Inspiron 6000 Alps Touchpad not working

Dell Inspiron 6000 Touchpad not working. External USB mouse works. Touchpad stopped working when USB mouse ws connected (I am guessing). When running in Diagnostic mode, I was able to use the touchpad. diagnostic test did not return anything. I have tried the latest driver from Dell's site for Mouse, BIOS. Checked Registry key hkey_local_machine/systemcontrolsetservicekbdclassstart (value was 1). Any thing else I am missing?

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  • ahmjt Aug 29, 2008

    Sorry, I forgot to mention - but one of the first (and obvious) thing I tried was uninstalling the touchpad. The machine reinstalled the touchpad, but it was not responding. After that, I loaded the new drivers from the DELL site). I tried the mouse settings to make sure touchpad and touchpad-buttons were enabled. I tried selecting/not-selecting "Disable touchpad when external mouse is present" option. One thing I recall now is - I once had a problem with my DVD/RW drive on the laptop. DVD was not working. CD was working fine. I tried a registry tweak (delete upperfilter/lowerfilter for a specific key with hexadecimal name that I can't remember now). After that DVD started working fine. I do not know if that has anything to do with the touchpad. I have been using the USB mouse for long time, and I have discovered the touchpad not working recently.

  • ahmjt Aug 29, 2008

    Not sure about BIOS flash, but I have tried downloading latest BIOS from DELL support. The touchpad works fine while running the diagnostic test (fn + Power_switch to start)!! So my guess is the hardware is fine. To make matter worse, I have played withe the registry this evening and now even the USB mouse is not working any more :( I deleted the upper filter key for the alps touchpad. Before doing that I made a backup up of the registry and created a restore point. After the registry change, restoring to previous restore point or registry backup was not successful.



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Try unistalling the touchpad driver, and reboot. The machine will find the touchpad and reinstall the driver automatically. These have a tenancy to glitch when using an external mouse, and this should clear it up. Let me know.

Posted on Aug 28, 2008

  • Ryan Rogers
    Ryan Rogers Aug 29, 2008

    You might try a bios download from Dell's support site, and check the connection, sometimes a touchpad connection will get a little dirt or corrosion build up or just work itself out a bit. If the bios flash doesn't and the connection is good, then I'm afraid you may need to replace the touchpad.

  • Ryan Rogers
    Ryan Rogers Aug 29, 2008

    A bios flash and a system repair will reset the registry. I would try both of these and see where it gets you.


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Go to
Control panel,
mouse properties,
Device Select tab,
remove check from
"Disable Touch Pad / Stick when USB pointing device is present".

Posted on Dec 01, 2008

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I have this problem, but the computer did not see the alps touch pad,

Posted on Apr 13, 2011

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