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Re: Erratic Touchpad on Toshiba M50 Notebook
If the touchpad is working fine with the battery and if it is not working with the ac adaptor then in this case u can try with the different ac adaptor and still if it does the same thing then uninstall and resintall the toouchpad driver and restart the computer and still if it does so with the ac adaptor then u need to open the laptop chasis and then u need to fix up the power supply connector in the motherboard where the power supply from the ac adaptor is not getting the adequate response from motherboard.
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First thing to try to uinstall and reinstall the software for your touchpad. Go to Acer and get the latest drivers and or software. Sometimes, just removing the driver and letting windows find it again in device manager is enough to fix it. hopes this helps.
Normally though. keyboard and touchpad are seperate entities. which made me think of the motherboard as that is the only constant between the 2 but, if your touchpad is buggy maybe it is causing issues elsewhere.
Go to my computer, right click>properties>hardware tab>device manager, then look down the list for mouse and pointing devices, click the '+' sign and right click on your touchpad listing and select uninstall, and then restart the pc.
In Vista start control panel>classic view, then device manager
The touchpad will be reinstalled and then ready to use again as it should be back to normal
Could you try the Fn+F9 Key to Disable/Enable your touchpad mouse?
Because just now i've experiencing the same problem as you guys... and turns out I can make my touchpad working just by pressing the Fn+F9 key.
Note: if your Fn key is not working try installing Toshiba utilities for A135 called FlashCard, run the program and there will be a dropdown menu at the upperside of your screen... then click on F9 >> and choose Enable.... Thats It... :)