A graphic designer reports that the cursor on their laptop is erratically jumping around the screen when they are using the trackpad, but it functions correctly when using an external mouse. After confirming that there is no physical damage to the trackpad, which of the following could be the MOST likely cause of this issue?
The trackpad needs to be recalibrated for sensitivity.
Touch-based features need to be disabled in the operating system settings.
There is moisture or dirt on the trackpad's surface.
Moisture or dirt on the trackpad's surface can cause erratic cursor movements or unintentional input. When using a clean and dry trackpad, the touch sensors can accurately detect finger movements, providing stable cursor control. Updating drivers would address software-level issues which typically don't cause erratic behavior restricted to the hardware type. Similarly, recalibrating the trackpad would help if the issue was related to sensitivity or input scaling, not physical surface interference. Disabling touch features would not rectify a problem caused by physical contaminants on the trackpad surface.
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Why does moisture or dirt on a trackpad affect cursor movement?
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What are the signs of outdated trackpad drivers, and why wouldn't they cause this issue?
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How do touch sensors in a trackpad work, and why wouldn't recalibration fix this issue?
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CompTIA A+ 220-1101 (V14)
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