Show Control Laptop does not turn on, power button and caps lock key flashes


  • When attempting to turn on a show control laptop computer, it refuses to power on and instead flashes the power button and caps lock key at the same time.
  • The charging indicator near the DC power port is flickering white


  • Show control Laptop running on an HP TouchSmart computer. Part 0A-1403-1002 Rev 03
  • Laptop battery is dead
  • Computer is plugged into a charger/power supply.


  • Computer is connected to a Dell laptop power supply rather than an HP power supply.  The two are not compatible with one another.


  • Observe the markings on the power supply. If it is marked Dell, the issue is confirmed.
  • Look at the end of the DC power cord on the power supply. If it has a blue colored ring indicator molded in the plug, it is a Dell power supply and the issue is confirmed.  


  • Remove the Dell power supply and use an HP power supply designed for the laptop.
  • If the correct power supply is not present, contact Daktronics Technical Support to order a replacement.
    • United States & Canada 1-800-325-8766
    • Outside US & Canada +1-605-697-4000
    • Or submit a Service Request form and reference this article.

KB ID: DD3409795

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