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New build - Asus P8 Z77 - no boot

Hope this is the right area to post..


So this is a new build for a friend, just got the parts in today. its a Asus P8 Z77 mobo, with corsair ram. etc....


I finished putting it all together, double checked everything.. and go to hit the boot button... and nothing.. on the display.

So here's whats happening

Yes I have power on the mobo (green LED)
Yes the processor fan and the case fans are running
Yes its a powerful enough power supply (750W)

I tried taking out 1 ram stick, then the other. and swapping ram slots etc.. nothing

I tried reseating the processor

On boot I do get a quick "red DRAM" led that comes on for about half a second.. and then turns off. (not sure if thats a clue, or just part of the boot cycle)

I tried booting without HDD's or my GPU, no difference.


Last but not least, this Mobo does have on-board HDMI and thats what I'm using to connect to.. I am assuming I can do this on start up with no complications... but you never know.


Any help would be great! I really don't want to have to RMA this mobo.
4 answers Last reply Best Answer
More about build asus z77 boot
  1. P.S. Just tried a VGA cable.. and no change.

    Also tried a different monitor (read that some monitors don't post until it reaches windows.. so just checking)
  2. Best answer
    Dewm said:
    P.S. Just tried a VGA cable.. and no change.

    Also tried a different monitor (read that some monitors don't post until it reaches windows.. so just checking)


    Are you using the iGPU in the processor or a separate graphics card, it sound like the iGPU in the processor is not enabled in the bios (System Agent Configuration) enable the iGPU Multi-Monitor option. If you are using a separate GPU, plug the lead into the graphics card not the board, if neither option try clearing the cmos. Some older monitors don't auto detect and need switching to HDMI, DVI etc in the monitor menu.
  3. mistral said:
    Dewm said:
    P.S. Just tried a VGA cable.. and no change.

    Also tried a different monitor (read that some monitors don't post until it reaches windows.. so just checking)


    Are you using the iGPU in the processor or a separate graphics card, it sound like the iGPU in the processor is not enabled in the bios (System Agent Configuration) enable the iGPU Multi-Monitor option. If you are using a separate GPU, plug the lead into the graphics card not the board, if neither option try clearing the cmos. Some older monitors don't auto detect and need switching to HDMI, DVI etc in the monitor menu.


    First off, Thanks for the response!


    here are the combo's I've tried

    onboard HDMI with GPU installed
    onboard HDMI without the GPU installed
    onboard VGA without GPU installed
    GPU HDMI


    For the HDMI I've been using a Asus monitor we just bought 2 days ago. And for the VGA I used a 4 year old Dell monitor.

    And yes I tried manually switching inputs on the monitor (thinking also maybe it didn't auto detect)

    and I did try clearing CMOS (although I've never done that before, and not 100% sure I did it correctly)

    (to clear CMOS I turned it off, flipped the power switch on the power supply, moved the CMOS jumper over for 5 seconds and then moved it back)

    and none of these made a difference.
  4. So I don't know what changed. But this morning I moved the HDMI from the onboard to my main GPU. and fired it up...and it worked!

    It ran through the BIOS and everything... So I dunno :S

    (I know for a fact I tried plugging it into my main GPU at least once last night)
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