Why is the touchscreen not responding?

Why is the touchscreen not responding? The touchscreen is either not responding accurately, or not responding at all to touch. I am not sure if it is just out of sync, or if it is something more serious.
Asked by: Guest \| Views: 179

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Guest [Entry]

You may have turned it off. Maybe not on purpose. Generally you have to push a function button. For example mine Is function f7