Jump to content

PC will not boot - 2 Leds

Recommended Posts

After swapping my watercooling system for another, my system will not boot now. Motherboard shows 2 leds and does not beep. I've verified my video card, memory, and cpu are good. Is my motherboard dead?


When I power on, 3 Leds flash on then revert to 2 Leds. Anyone got any ideas?


I've swapped memory, cpu, and video with no luck. Currently, I'm clearing my cmos without the battery and power plugged in.



Share this post

Link to post
Share on other sites

  • 2 weeks later...

On mine, it was air. The fan was operating on the chipset hs.

Now I get nothing. I get the little amber lights but nothing else. Nothing, no fans, no red leds like before. The board is out of the case with just v.card, cpu, and various sticks of ram.

I even tried a pci v.card, no go.

RMA time?

Share this post

Link to post
Share on other sites

Here is the way to read the Diagnostic LEDs.


4 LEDs on = Power applied, checking CPU

3 LEDs on = CPU has been detected OK, checking RAM

2 LEDs on = RAM has been detected OK, checking VGA

1 LED on = VGA has been detected OK, entering BIOS

0 LEDs on = System has booted to the Operating System.


As long as you are in the BIOS including running memtest from the BIOS option, there will be one LED on.


Example: If you are getting 3 LEDs on, it means the rig is having trouble detecting the RAM.


The lower(PCI) Amber LED is the 5VSB indicator. The upper Amber LED is the RAM voltage indicator. Once the rig has started and been shut down the RAM LED will go out until the PSU is power cycled.

Share this post

Link to post
Share on other sites

Join the conversation

You can post now and register later. If you have an account, sign in now to post with your account.

Reply to this topic...

×   Pasted as rich text.   Paste as plain text instead

  Only 75 emoji are allowed.

×   Your link has been automatically embedded.   Display as a link instead

×   Your previous content has been restored.   Clear editor

×   You cannot paste images directly. Upload or insert images from URL.


  • Create New...