[Motherboard] ASUS motherboard troubleshooting via Power LED

Check support Power LED function motherboard list

Please follow below steps to troubleshoot with the blinking frequency of the Power LED light

A. Power LED flashes quickly after power on, flashing 4 times per second (no memory or memory error)

B. Power LED flashes slowly after power on, flashing once every 2 seconds (no VGA card or VGA card error)

C. The Power LED flashes super slowly, the light is on for 4 seconds, and the light is off for 4 seconds (no boot device or boot device error)

A. Power LED flashes quickly after power on, flashing 4 times per second (no memory or memory error)

1. Confirm that the memory is fully installed as shown in the below image. If it's not fully installled, please try to re-install it.

Incorrect case:

Correct case :

2. Check if there is any dirt on the memory Pin or memory slot of Motherboard as shown in the below images. If there is, please clean it and try again.

3. Please replace your DRAM with the one on Memory support list(QVL list)

    You can refer to How to query Memory QVL list

4. Please refer to the suggested memory configurations found in the user manual of your model as shown in the below picture, then try again.

    You can refer to download user manual

5. If you're using two or more memory, try to boot with only one memory installed, then reboot each time with an additional memory installed.  

6. If your problem cannot be solved after following steps 1-5, please change the memory and try again

B. Power LED flashes slowly after power on, flashing once every 2 seconds (no VGA card or VGA card error)

1.  Integrated Graphics(On-board) output is not normal. Please try to re-install the CPU 

2.  Add-on Graphics card display output is not normal :

a. Try to re-install Graphics card

b. Check for any dirt on the PCI-E Pin of motherboard or Graphics card Pin as shown in the below image. If so, please clean it and try again

c. If your problem cannot be solved after following steps a~b, please try another Graphics card.

C. The Power LED flashes super slowly, the light is on for 4 seconds, and the light is off for 4 seconds (no boot device or boot device error)

1.  Please re-connect the SATA cable to the motherboard and the hard disk respectively

2.  If an M.2 SSD is installed, please re-connect the M.2 SSD again and confirm that the M.2 screw is locked

3. Check for any dirt on the Gold pins of the M.2 SSD or M.2 slot of the Motherboard as shown in the image below. If there is dirt found, please clean it and try again

4.  If steps 1~3 can't solve your problem, please try another SATA cable, SATA Port, or SATA hard disk (M.2 SSD)

Q&A

Q1. What to do if the power LED troubleshooting does not solve your problem?

A1-1:  Please try to clear CMOS, you can refer to: How to Clear CMOS

A1-2:  Please update BIOS if MB support USB BIOS FlashBack function ,you can refer to: How to use USB BIOS FlashBack?

Q2:Which motherboards support the Power LED function ?

A2:The following motherboards support Power LED function

Notice

Above information might be partly or entirely quoted from exterior websites or sources. please refer to the information based on the source that we noted. Please directly contact or inquire the sources if there is any further question and note that ASUS is neither relevant nor responsible for its content/service.
This information may not suitable for all the products from the same category/series. Some of the screen shots and operations could be different from the software versions.
ASUS provides the above information for reference only. If you have any questions about the content, please contact the above product vendor directly. Please note that ASUS is not responsible for the content or service provided by the above product vendor.