A customer brings in a laptop with a touch screen that is not working correctly. The touch screen either does not respond at all or provides unusual or inaccurate responses. What is a possible cause for such behavior?

54. A customer brings in a laptop with a touch screen that is not working correctly. The touch screen either does not respond at all or provides unusual or inaccurate responses. What is a possible cause for such behavior?

• The battery is not seated properly.
• The DC jack is not grounded or is loose.
• The digitizer is faulty.
• Too many apps are open.

Explanation: A touch screen that is unresponsive or inaccurate can be caused by dirt or grease on the screen, the screen protector, or apps consuming too many resources.
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