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The Dell Latitude 5420 is a ruggedized and waterproof laptop.

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Why won't my laptop turn on?

So one night I was watching Netflix when my laptop randomly turned off while charging when it turned off my laptop charger did with it and I turned my laptop charger back on and proceeded to charge it trying to turn my laptop back on keep in mind, it was fully charged. And so I tried turning it back on but all it did was turn my keyboard light back on and my caps lock button stayed on, and my charging light flickered white 5 times and orange 3 times over and over till it turned fully off again, I've tried changing chargers waiting a few days and nothing has been working. And now the charging light won't turn on and the keyboard is flickering.

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According to the Dell Support page that beep code is consistent with a Power Rail failure and the solution for that would be to replace the system board which isn't the most pleasant answer in the world, sorry about that. I did however see that a few users on Reddit had success resetting their RTC, now this very well may not work but it wouldn't hurt to try before replacing the Motherboard on the computer.

How to reset RTC

How to Reset the Real-Time Clock (RTC)

  1. Turn off the computer.
  2. Connect the AC adapter to the computer.
  3. Press and hold the power button (around 30-35 seconds), until the power LED blinks three times.
  4. Release the power button.
  5. The RTC reset is complete after the power button is released.

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