Touchpad Failure; Internal Speaker Failure; Sound Problems - Acer AO722 Service Manual

TouchPad Failure

If the TouchPad doesn't work, perform the following actions one at a time to correct the problem. Do not
replace a non-defective FRUs:

Internal Speaker Failure

If the internal Speakers fail, perform the following actions one at a time to correct the problem. Do not replace
a non-defective FRUs:

Sound Problems

If sound problems are experienced, perform the following actions one at a time to correct the problem.
1. Reboot the computer.
2. Navigate to Start
the Device Manager to determine that:
Chapter 4
Control Panel System and Maintenance System Device Manager. Check
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