Acer ZX4830 Series Service Manual

Contents

155 Chapter 4General Troubleshooting IssuesComputer Shutsdown IntermittentlyIf the system powers off at intervals, perform the following actions one at a time to correct the problem.1. Check the power cable is properly connected to the computer and the electrical outlet.2. Remove any extension cables between the computer and the outlet.3. Remove any surge protectors between the computer and the electrical outlet. Plug the computer directlyinto a known good electrical outlet.4. Disconnect the power and open the casing to check the Thermal Unit and fan airways are free ofobstructions.5. Remove all external and non-essential hardware connected to the computer that are not necessary toboot the computer to the failure point.6. Remove any recently installed software.7. If the Issue is still not resolved, see “Online Support Information” on page 184.Random Loss of BIOS SettingsIf the computer is experiencing intermittent loss of BIOS information, perform the following actions one at atime to correct the problem.1. If the computer is more than one year old, replace the CMOS battery.2. Run a complete virus scan using up-to-date software to ensure the computer is virus free.3. If the computer is experiencing HDD or ODD BIOS information loss, disconnect and reconnect the powerand data cables between devices.If the BIOS settings are still lost, replace the cables.4. If HDD information is missing from the BIOS, the drive may be defective and should be replaced.5. Replace the Motherboard.6. If the Issue is still not resolved, see “Online Support Information” on page 184.Microphone ProblemsIf external Microphones do no operate correctly, perform the following actions one at a time to correct theproblem.1. Check that the microphone is enabled. Navigate to Start´ Control Panel´ Hardware and Sound´Sound and select the Recording tab.2. Right-click on the Recording tab and select Show Disabled Devices (clear by default).3. The microphone appears on the Recording tab.4. Right-click on the microphone and select Enable.5. Select the microphone then click Properties. Select the Levels tab.6. Increase the volume to the maximum setting and click OK.7. Test the microphone hardware:a. Select the microphone and click Configure.b. Select Set up microphone.c. Select the microphone type from the list and click Next.d. Follow the onscreen prompts to complete the test.8. If the Issue is still not resolved, see “Online Support Information” on page 184.Laptopblue