220-802 · Question #521
When using an optical mouse connected via USB on a laptop and experiencing strange cursor movement, which of the following is MOST likely to be the cause? (Select TWO).
The correct answer is B. There is contact with the touchpad E. The surface is interfering with the optical sensor. Erratic cursor movement on a laptop with a USB optical mouse most commonly results from unintended touchpad input or an incompatible surface beneath the optical sensor.
Question
When using an optical mouse connected via USB on a laptop and experiencing strange cursor movement, which of the following is MOST likely to be the cause? (Select TWO).
Options
- AThe mouse is failing and should be replaced
- BThere is contact with the touchpad
- CThe mouse drivers need to updated
- DThe laptop is using a capacitive touchscreen
- EThe surface is interfering with the optical sensor
How the community answered
(44 responses)- A2% (1)
- B91% (40)
- C2% (1)
- D5% (2)
Why each option
Erratic cursor movement on a laptop with a USB optical mouse most commonly results from unintended touchpad input or an incompatible surface beneath the optical sensor.
Hardware failure in a mouse typically causes the cursor to stop responding entirely or become unresponsive, not produce erratic movement, making failure a less likely cause than environmental factors.
Laptop touchpads remain active alongside USB mice by default, and accidental palm or wrist contact with the touchpad generates simultaneous cursor input that appears as erratic or strange movement.
Outdated or corrupt mouse drivers usually result in complete loss of mouse function or device misidentification, not the specific symptom of strange cursor movement.
A capacitive touchscreen is a display input technology and does not interact with or affect the tracking behavior of a separate USB optical mouse.
Optical mice rely on a contrasting, matte surface to track movement accurately; reflective, transparent, or glass surfaces scatter or confuse the optical sensor's LED and camera, causing unpredictable cursor jumps.
Concept tested: Optical mouse tracking and touchpad interference troubleshooting
Source: https://support.microsoft.com/en-us/windows/troubleshoot-mouse-keyboard-or-touchpad-issues-39b8d14f-4b23-9c37-0247-c5a4e69a1f27
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