ASUS N56VZ - no logo, no post, no boot, no screen.

Discussion in 'Asus' started by davebugyi, Apr 4, 2013.

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  1. davebugyi

    davebugyi Notebook Enthusiast

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    Hello.

    Recently I changed my RAM in the notebook and was working correctly.

    However, I made a change in the BIOS - DVMT allocation size from 64 MB to 128 MB.

    Now the machine does not boot when powered on.

    Led Indicators come online, fans are working, keyboard lights up for 1-2 seconds, but no screen and that is all.

    Any ideas?
     
  2. Zaphod111

    Zaphod111 Notebook Enthusiast

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    Hmmm, have you tried replacing the new ram with the original ram and trying it from there?
     
  3. Prostar Computer

    Prostar Computer Company Representative

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    BIOS reset? You may need to do a hard reset via removing the battery though, if the system will not boot.
     
  4. davebugyi

    davebugyi Notebook Enthusiast

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    I tried the original ram, one stick, both - every combo - no go.

    The Bios Reset should work, but that battery is probably hidden deep inside, so I try to find other methods before RMA and not taking it apart.
     
  5. Prostar Computer

    Prostar Computer Company Representative

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    Agreed. If you try to remove the battery, you'll end up voiding your warranty (your model may be out of it already for all I know; not sure which N56VZ you have and when you purchased, nor whether you have an extended warranty or not).
     
  6. davebugyi

    davebugyi Notebook Enthusiast

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    The NB was purchased only a month ago - every since I was facing random issues, so it should be still under warranty.
    I got my RMA ticket already but if you have some ideas, they're welcome.
     
  7. GenTechPC

    GenTechPC Company Representative

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    not sure if this will work: hold F4 key as soon as you press the power button.

    Also have you try remove the laptop battery and disconnect the AC for few minutes and try power it on again?
     
  8. Prostar Computer

    Prostar Computer Company Representative

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    If you try this EC refresh, remove the RAM as well.
     
  9. davebugyi

    davebugyi Notebook Enthusiast

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    F4 did not do anything, neither the removal of the battery. I will try with the RAM removed.
    Also there are BIOSes on the recovery/driver DVD, but does nothing.
    However, I tried CTRL+HOME, and it started to read the disc, but after a few seconds it rebooted and started to boot as normal: Drive, HDD, keyboard lit, but nothing happened.
    I try all the above without RAM.


    EDIT:

    Without RAM is more dead than before, even the keyboard won't lit up.
    Tried F4, CTRL+HOME, RECOVERY DVD.

    Looks like a completely dead board.
     
  10. Prostar Computer

    Prostar Computer Company Representative

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    No, I meant leave the RAM modules out when you perform the EC refresh that Ken mentioned trying, then reseat them before plugging the battery back in and trying to power on the system agian. Trying to boot the system with no memory is going to yield a big, beautiful, unresponsiveness. :)

    You're probably looking at RMA'ing it, even if the fix is a simple hard reset of BIOS.
     
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