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Chapter 4
153
External Mouse Failure
If an external
Mouse
fails, perform the following actions one at a time to correct the problem.
1.
Try an alternative mouse.
2.
If the mouse uses a wireless connection, insert new batteries and confirm there is a good connection. See
the mouse user manual.
3.
If the mouse uses a USB connection, try an alternate USB port.
4.
Try an alternative program to verify mouse operation. Reinstall the program experiencing mouse failure.
5.
Restart the computer.
6.
Remove any recently added hardware and associated software.
7.
Remove any recently added software and reboot.
8.
Restore system and file settings from a known good date using
System
Restore
.
If the issue is not fixed, repeat the preceding steps and select an earlier time and date.
9.
Run the Event Viewer to check the events log for errors. For more information see Windows Help and
Support.
10.
Roll back the mouse driver to the previous version if updated recently.
11.
Remove and reinstall the mouse driver.
12.
Check the Device Manager to determine that:
•
The device is properly installed. There are no red Xs or yellow exclamation marks.
•
There are no device conflicts.
•
No hardware is listed under Other Devices.
13.
If the Issue is still not resolved, see “Online Support Information” on page 205.
Other Failures
If the CRT Switch, Dock, LAN Port, external MIC or Speakers, PCI Express Card, 5-in-1 Card Reader or
Volume Wheel fail, perform the following general steps to correct the problem. Do not replace a non-defective
FRUs:
1.
Check Drive whether is OK.
2.
Check Test Fixture is ok.
3.
Swap M/B to Try.
Summary of Contents for 4740G series
Page 6: ...VI ...
Page 10: ...X Table of Contents ...
Page 56: ...46 Chapter 2 ...
Page 63: ...Chapter 3 53 5 Carefully open the HDD Cover ...
Page 65: ...Chapter 3 55 5 Remove two 2 screws from the WLAN bracket and lift it clear of the device ...
Page 90: ...80 Chapter 3 5 Remove the TouchPad Bracket from the Upper Cover ...
Page 92: ...82 Chapter 3 Step Size Quantity Screw Type Media Board M2 5 3 2 ...
Page 97: ...Chapter 3 87 Step Size Quantity Screw Type Bluetooth Module M2 5 3 1 ...
Page 99: ...Chapter 3 89 7 Lift one edge of the mainboard as shown to remove it from the base ...
Page 107: ...Chapter 3 97 4 Lift the bezel away from the panel ...
Page 110: ...100 Chapter 3 4 Lift the LCD Panel out of the casing as shown ...
Page 117: ...Chapter 3 107 13 Ensure that the securing pin is properly located ...
Page 129: ...Chapter 3 119 ...
Page 134: ...124 Chapter 3 4 Turn the computer over Replace the fifteen screws on the bottom panel ...
Page 141: ...Chapter 3 131 4 Turn the computer over and replace the six 6 securing screws as shown ...
Page 186: ...176 Chapter 6 ...
Page 187: ...Chapter 6 177 ...
Page 208: ...Appendix A 198 ...
Page 214: ...204 Appendix B ...
Page 216: ...206 Appendix C ...