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sabertooth 990fx motherboard cpu led error, all fans are spinning

psu-tx850
graphics card-r9 290
heatsink-h100i
processor-fx9370
8 answers Last reply Best Answer
More about sabertooth 990fx motherboard cpu led error fans spinning
  1. The CPU led indicates that the CPU is preventing the system from posting. Make sure you have plugged in the 8 pin CPU supplemental power connector that is next to the CPU. Be sure your 24 PIN connector is fully plugged in. Also make sure you are running the proper Bios version that will support that chip.

    Are you using the sabertooth version 1 or 2? If it is PCI-e 3.0 Ver 2 we need to know this also.
  2. bgunner said:
    The CPU led indicates that the CPU is preventing the system from posting. Make sure you have plugged in the 8 pin CPU supplemental power connector that is next to the CPU. Be sure your 24 PIN connector is fully plugged in. Also make sure you are running the proper Bios version that will support that chip.

    Are you using the sabertooth version 1 or 2? If it is PCI-e 3.0 Ver 2 we need to know this also.


    i have version 2.0 with pcie 2.0 and all plugs seemed to be pluged in all the way. Including the 8 pin and 24 pin
  3. OK the version 2 boards have the ability to flash the bios with out starting the board. Go to Asus here: http://www.service.asus.com/#!downloads/c1wax. and enter your OS then download the newest Bios update. THen look in your manual for the board and rename the file to what it says and put it on a flash drive. Insert it into the white USB slot designated for Flashback. then push and hold the flashback button till it starts to flash. This if done correctly will take a few to stop flashing. It will update teh bios for you to the newest bios and then try and see if the system will turn on.
  4. OK the version 2 boards have the ability to flash the bios with out starting the board. Go to Asus here: http://www.service.asus.com/#!downloads/c1wax. and enter your OS then download the newest Bios update. THen look in your manual for the board and rename the file to what it says and put it on a flash drive. Insert it into the white USB slot designated for Flashback. then push and hold the flashback button till it starts to flash. This if done correctly will take a few to stop flashing. It will update teh bios for you to the newest bios and then try and see if the system will turn on.[/quotemsc

    can i do that with an fx chip installed
  5. Yes all that needs to be hooked up is the PSU. you don't even need ram, Just the PSU. It can be done with the full system assembled just not powered on, just plugged into the wall.
  6. i did that still got the error
  7. Best answer
    Then either the CPU is bad or the motherboard is bad. To test these requires either another motherboard or another CPU. IF you can get your hands on another CPU this would be the easiest test. But if not If you can try your CPU in a friends Board to test it this will work also. IF none of these options are viable then I suggest you RMA the motherboard first. More times than not the motherboard is bad. This is why I suggest this method.
  8. I have an old mother board and I will test the cpu on that one, but I do not have a non-fx processor.
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