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04-19-2019 02:17 AM
First:- Turn off the computer, press and hold the PWR button for 4 seconds.
Then - Leave only keyboard and mouse connected, disconnect all externally connected
devices such as Docking Station, USB storage devices, displays, and printers.
Unplug the AC adapter from the computer.
Next - Press and Hold the Power button for 15 seconds to Hard Reset.
Rinse and Repeat
Power on your PC, press Esc (repeatedly), then F2 at the prompt.
Choose System Tests (Fast Test does a 4 minute hardware check).
04-19-2019 03:15 AM
When you say flicks off, do you mean it turns off completely? No fans, nothing?
Are you able to reach the startup menu? Turn off PC by holding the power button. Turn on PC and press ESC continuously until the startup menu appears. Next press F2 to enter diagnostics and perform system test. See if there are any hardware failure codes and let me know.
04-20-2019 03:58 PM
They would probably be the thing to indicate the fault.
You get a LONG (MAJOR) signal category, RED LED &
then a SHORT (MINOR) signal category, WHITE LED.
Major – the category of the error; Minor – specific error in that category
The AUDIBLE repeats 5 times, and the VISUAL until power is removed.
The main area (DXE) of BIOS has become corrupted and there is no recovery binary image available.
Also happens when updating BIOS.
Typically no steps needed.
1. Allow the system to complete its updates and changes.
2. If updates are stalling, attempt Sure Start Recovery.
The embedded controller policy requires the user to enter a key sequence.
1 Follow any prompts given.
2 If issue persists, attempt Sure Start Recovery.