Describe the symptom precisely

Observation	What it suggests	What it does not prove
No LED or sound	Check power or startup	The card is definitely corrupted
LED, sound or responses present, but black screen	Possible display chain, profile or DTB issue	A specific panel
Logo, then black screen	Partial boot, configuration or storage issue	A definite hardware fault
Black screen only after a new flash	Image, checksum, profile or first boot	A definitely incompatible motherboard

Checks without changing the card

Record LEDs, sound, backlight, any vibration and button response. Allow official first boot to finish, approximately two to three minutes in the observed guide. Do not immediately switch off a console that is initialising.

Remove unnecessary accessories. Do not change several elements at once.

Power and startup

To retry first boot, remove TF2, leave only the system card and do not connect the charger, following the dArkOSRE guide. Use a sufficiently charged battery, then wait for initialisation to finish.

If no LED lights up, first check charging and the button; a DTB does not explain a complete absence of power.

MicroSD card and image

Check that the image comes from the official release, its checksum matches, writing targeted the correct card and the tool finished without error. Test microSD health separately if it produces errors.

Do not format the original card or repeatedly reflash the only copy of your data.

Panel and DTB

Compare the motherboard identifier and panel with the dArkOSRE matrix. On Windows, revisit SELECT MODEL; on macOS/Linux, check that files from the exact folder were copied to the BOOT root.

Documentation mentions a possible Panel 9 case after a black screen, but the symptom alone cannot establish it. Use the identification page.

When to return to flashing

Reflash only if the checksum was wrong, writing failed, or an incorrect profile was applied and the official procedure requires starting over. The installation guide contains the full steps; they are not repeated here.

Suspected hardware fault and when to stop

If a verified card with the exact profile produces no display despite consistent boot signs, or the device is damaged, stop software tests. A ribbon cable, screen, port or motherboard may be involved.

Keep the original card and diagnostic observations, then contact the seller or a competent repairer to examine the screen, ribbon cable and power supply. Open the console only with a suitable hardware procedure and the ability to perform it.