Asus ROG STRIX Z790-E GAMING WIFI Manual page 35

21. Q-LEDs
The Q-LEDs check key components (CPU, DRAM, VGA, and booting devices) during
the motherboard booting process. If an error is found, the critical component's LED
stays lit up until the problem is solved.
The Q-LEDs provide the most probable cause of an error code as a starting point for
troubleshooting. The actual cause may vary from case to case.
22. BIOS FlashBack™ LED
The BIOS FlashBack™ LED lights up or blinks to indicate the status of the BIOS
FlashBack™.
Refer to the BIOS update utility section for more information on using the BIOS
FlashBack™ feature.
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