professor Messer - troubleshooting laptops

Question 1

troubleshooting laptops issue is \_\_
• No display or dim video
  • Verify the backlight
  • Look closely, it may be barely visible
  • No backlight, replace the inverters
• Confirm video with an external display
  • Video good, but LCD bad
  • Replace the LCD display
• Flickering video
  • Connector problem
  • Bad video cable
  • Bad video hardware

Answer 1

LCD display troubleshooting

Question 2

troubleshooting laptops issue is \_\_
• Sticking keys
  • Difficult to clean
  • Keycaps are very (very) delicate!
• Ghost cursor / Pointer drift
  • Mousepad causes cursor to bounce around
  • Modify the configuration to check for palm press
  • Update your drivers
• Num lock indicator lights
  • The letters are numbers!

Answer 2

input issues

Question 3

troubleshooting laptops issue is __
• Multiple antennas
• WiFi main and aux, Bluetooth
• Antenna wires wrap around the laptop screen
• Easy to accidentally disconnect during maintenance
• No 802.11 wireless, no Bluetooth
• Check the connectors
• Loose cables can cause intermittent wireless
access

Answer 3

wireless troubleshooting

Question 4

troubleshooting laptops issue is __
• Battery not charging
• Batteries lose capacity over time
• Laptop charging hardware may be faulty
• No power
• Check the external power adapter “brick”
with multimeter
• Master laptop reset
• Hold power for 10 seconds - Each laptop is different

Answer 4

power issues

Question 5

troubleshooting laptops issue is __
• Toggle Fn keys
• Secondary functions
• Toggle between LCD / external monitor / both
• Use external monitor
• Bypass the LCD (but not the video hardware)

Answer 5

external monitor issues