[Graphics card] Troubleshooting of power detection LED turns red or flashes. Troubleshooting

The power detection LED of the graphics card is showing a red light or flashing, as shown in the picture below. This might be because the power cable of the graphics card is not plugged in or not plugged in tightly. You can refer to the following steps to troubleshoot the problem.

 

Table of contents：
1. Power detect LED Action Mechanism Introduction
2. Q&A   
Q1:  What does the on-off LED light on the ASUS graphics card represent?
Q2: If the graphics card output gets a black screen or abnormal screen during use, you can first check whether the LED light at the connection point of the power supply cable of the graphics card is constantly red or not?

 

 

1. Power detect LED Action Mechanism Introduction
(Applicable to：RTX3090TI/RTX4090/RTX4080/RTX4070TI/RTX 4080 SUPER/RTX4070 TI SUPER/RTX4070 SUPER/RTX5090/RTX5080/RTX5070TI/ RTX5070/RTX5060TI series graphics card)   
If you see the power LED of the graphics card lighting up red, you can refer to the following table to determine the status of your graphics card. All the following situations are normal phenomena:

Power detect LED Action MechanismATX 3.0/3.1 PSU Native16pin cable8pin to 16pin Adapter
The power cable is not plugged into the graphics card

LED ON
 

 

LED ON

The graphics card has been plugged into the power cable, but not turned on the computer

LED OFF

LED ON

The graphics card has been plugged into the power cable, turn on the computer

LED OFF

LED OFF


 

 

2.Q&A

Q1:  What does the on-off LED light on the ASUS graphics card represent?
A1: The meanings represented by the illumination or flashing of the LED are as follows:

The status of the physical LED indicator lights on the graphics cardCorresponding meaningTrouble shootings
LED stays on continuouslyNote: For the description of the normal LED stays on continuously behavior of the graphics card power LED, please refer to the mechanism explanation mentioned above regarding the Power detect LED Action Mechanism; 
If it is not the state as described above, it indicates an abnormality.		Step 1: Reinsert and reconnect the power cord, making sure it is securely plugged in.
Step 2: If the problem persists, please try replacing the power cord.
Step 3: If the problem still exists, please try replacing the power supply unit.
Fixed-frequency flashingInsufficient power supply (input voltage is lower than 10.8V)
Variable frequency flashing

Power supply anomalies include:

• Excessive current at a single pin (more than 9.2A)
• No current flowing through any pin
• If both voltage and current abnormalities occur simultaneously, current abnormalities will be displayed first, with a flashing warning at a non-fixed frequency.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Q2: If the graphics card output gets a black screen or abnormal screen during use, you can first check whether the LED light at the connection point of the power supply cable of the graphics card is constantly red or not?

A2: Please first make sure that the power supply cable of the graphics card is securely plugged in. If it is already plugged in, the power LED of the graphics card keeps red light, you can try replacing the power cable of the graphics card or try replacing the power supply that meets the power requirements of the graphics card.