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bios won't post on Asus PRIME Z270-A

CPU: Pentium G4500
motherboard: ASUS Z270-A
RAM 8GB 1 stick
psu; evga supernova g3 gold 1000

I am at the stage of bios post. And I am unable to get it to post. I have tried three power supplies. The power light turns on the fan spins on the processor, but it does post. I'm not using a video card. I have it plugged into onboard video. I checked and I have a compatible RAM. Now, my power supplies are not on the qualified vendors list of devices for this motherboard. Does that matter? I have a mouse plugged into USB and the keyboard USB is plugged in, and I have tried 2 motherboards.
Reply to krazitrain
16 answers Last reply Best Answer
More about bios post asus prime z270
  1. Tv, or monitor? What video cable?
    Reply to alexoiu
  2. alexoiu said:
    Tv, or monitor? What video cable?


    I tried two separate monitors. I'm using a DVI cable..I get a "no signal" message on monitors, so I know they are working.
    Reply to krazitrain
  3. Have you tested different RAM slots?
    Reply to alexoiu
  4. Is your ram stick in the right slot?
    Most mobo's have a specific slot that single stick configurations have to be in, consult your manual.
    Reply to boosted1g
  5. alexoiu said:
    Have you tested different RAM slots?


    yes - all 4 slots. and tried a 4gb stick too.
    Reply to krazitrain
  6. What exact RAM using?
    Reply to alexoiu
  7. alexoiu said:
    What exact RAM using?

    I tried
    1 4gb crucial ballistix BLS2K4G4D240FSC
    1 8gb crucial ballistix BLS8G4D240FSB newegg says this isa newer version of BLS8G4D240FSA.

    ASUS COMPATIPLE list says use 8gb crucial BLS8G4D240FSA.

    that my problem?
    Reply to krazitrain
  8. Probably not. The RAM should work. It might be a CPU issue. Is it new, or used?
    Reply to alexoiu
  9. alexoiu said:
    Probably not. The RAM should work. It might be a CPU issue. Is it new, or used?


    it's new, but I have a G4560 that I can try also.
    Reply to krazitrain
  10. Yes, try the 4560, to rule out a CPU issue.
    Reply to alexoiu
  11. alexoiu said:
    Yes, try the 4560, to rule out a CPU issue.


    I tried the 4560, it is still not working with 8 GB RAM in second slot
    Reply to krazitrain
  12. Same with the other slots, or different RAM?
    Reply to alexoiu
  13. alexoiu said:
    Same with the other slots, or different RAM?


    I tried the 8 GB and 4 GB RAM in all four slots.
    Reply to krazitrain
  14. Best answer
    I figured it out! I did not realize that I had to plug-in both the 28 and 8 pin cables. All I had in was the 28.
    Reply to krazitrain
  15. ok. But you said the CPU fan did spin. Theoretically, it shouldn't without the 8 pin power cable.
    Reply to alexoiu
  16. alexoiu said:
    ok. But you said the CPU fan did spin. Theoretically, it shouldn't without the 8 pin power cable.


    yes. It was always spinning.
    Reply to krazitrain
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