Dell Latitude 12 Rugged Extreme 7214 Owner's Manual page 94

Issue
BIOS
Touch Pad and
Keyboard
Integrated NIC
VGA
94
Suggested Troubleshooting Steps
6. If the LCD has color problems, run the ePSA diagnostics.
7. If the LCD has burned-out pixels, verify that the LCD is still within LCD
standard guidelines. For Dell internal users only, click here.
If users have problems while using the notebook, the problems may be related
to BIOS settings configured incorrectly in BIOS/System Setup. Check the System
Setup pages to verify the settings on each page. Try resetting BIOS to default
settings by pressing Alt+F.
To troubleshoot touch pad and keyboard-related problems, you can perform
the following steps:
1. Attach an external mouse or keyboard to check for peripheral functionality.
2. Run the ePSA diagnostics.
If the system is not able to identify any network after connecting the network
cable to the network port, try the following troubleshooting steps:
1. Make sure that the network driver has been installed and is working
properly.
2. Check that the network LEDs are responding.
3. Check System Setup to make sure that the NIC is enabled.
4. Try reseating the cable.
5. Try a known good cable, if one is available.
6. If a known good system is available, check if that system is connecting to
the network.
7. Run the ePSA diagnostics on the network port.
NOTE: If the integrated network hardware solution is defective or
nonfunctional, replace the system board.
No additional drivers or updates are needed for VGA functionality. When
troubleshooting an external monitor, keep these tips in mind:
• Check both ends of the cable for a snug connection into the laptop and into
the external monitor.
• Adjust the contrast and brightness controls on the external monitor.
• Make sure that the notebook is not set to internal display only.
• Swap with a known good cable.
• Try with a known good external monitor. Check the external device's
documentation for any additional steps required for functionality.
NOTE: If the VGA hardware port is defective or nonfunctional, replace the
system board.