Dell Latitude E6400 LED POST Codes Diagnostic Indicators

Created by on July 2, 2014
PrintEmail

How to identify LED Light codes:

When a laptop or computer first powers on, it goes through an initial set of diagnostic tests to make sure vital components are preforming correctly. These tests are called POST or Power On Self Test. When a test fails, the user is notified via POST codes, Light codes, or Beep codes. For diagnosing LED light codes you need to:
  • Power on the laptop or restart it if it is already on.
  • Identify the correct flashing light sequence.
Dell Latitude E6400 LED Light Codes
LED Light Code Component Causing No POST Possible Solution(s)
Num_Caps_Scroll_Flash1 Motherboard / System Board Fault
  • Replace the motherboard / system board.
Caps_Flash1 RAM Memory Fault
  • Reseat the memory sticks.
  • Replace the memory sticks.
  • Replace the motherboard / system board.
Num_Flash1 CPU Processor Fault
  • Reseat the CPU.
  • Replace the CPU.
  • Replace the motherboard / system board.
Caps_Scroll_Flash1 RAM Not Detected
  • Install the memory sticks.
  • Reseat the memory sticks.
  • Replace the memory sticks.
  • Replace the motherboard / system board.
Num_Caps_NoScroll_Flash1 Option ROM Fault
  • Reseat the ROM device.
  • Replace the ROM device.
  • Replace the motherboard / system board.
Num_Caps_Flash1 Video Card Fault
  • Replace the video card.
  • Replace the motherboard / system board.
Num_NoCaps_Scroll_Flash1 USB Controller Fault
  • Unplug the USB devices.
  • Replace the motherboard / system board.
Num_Scroll_Flash1 LCD Screen Fault
  • Reseat the LCD cable.
  • Replace the LCD screen.
  • Replace the motherboard / system board.
NumOff_CapsOn_ScrollOff_Flash1 Hard Drive / Optical Drive Fault
  • Remove the hard drive and optical drive.
  • Replace the hard drive and test. Then the optical drive and test.
  • Replace the failed component.
  • Replace the motherboard / system board.
NoNum_Caps_Scroll_Flash1 Modem Fault
  • Reseat the modem.
  • Replace the modem.
  • Replace the motherboard / system board.

Dell Laptop Replacement Parts Needed

DIY Discount - Parts-People.com offers 5% off to all DO-IT-YOURSELFERS!
Use this coupon code to save 5% off these parts
DIYM514
Latitude E6400 LED POST Codes

Read Related Articles

Topics: Dell Latitude Repair Manuals Dell Laptop Repair Dell Repair Manuals LED POST Codes Latitude E6400

Tags

Join the conversation!
  • Martha Swaim

    I am trying to power up my Dell E6400. I do not have the battery installed. I am plugged into AC. I push gray button top left above keyboard. Nothing. No lights, no noise. Dead.

    • This could be a lot of different things. You should check to make sure the LED light on the adapter is turning on and stays on after it is plugged in. If the adapter is working properly, then it’s either gonna be the power button or cable, the DC jack or cable, or a motherboard problem. Because of the amount different possible problems and the types of problems, I would suggest taking it to a repair shop to get diagnosed.

  • GinaMcLoud

    My E6400 starts then shuts off after 10-15 seconds. The LED with the letter A in it then flashes exactly 22 times. This happens when it’s plugged in and when it’s running on batteries. Removing the battery and resetting the power switch did not fix it. Does anyone have a diagnosis?

    • Try removing 1 memory stick at a time and restarting the laptop. If it fixes the problem with one of the sticks removed, try putting the existing stick into the other slot and restart the laptop. This should tell you if you have a bad memory stick or a bad memory slot. If its a bad memory slot, you will have to replace the motherboard.