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

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?

 

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

 

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

 

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.

 

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).

 

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.

 

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?

 

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

 

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.

 

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.

 

Yes, I tried, that EC refresh, without RAM. As i mentioned - all the available combinations.

 

The easiest, fastest and most care-free method would be to take it apart, take out the CRTC battery. However since you don't want to do that you can try the following

External monitor
First of all, try connecting it to an external monitor. Maybe it will work? Use keyboard combinations to make it work with external monitor. It should be like Fn+F8. If it works, then just go into the BIOS and change settings.

Reset BIOS to default blindly
If that doesn't work, then lets try to reset the BIOS to defaults blindly. Follow the following procedure.
1. Turn computer on
2. Immediately keep pressing F2 non-stop for about 4 seconds
3. Press F9. Hit Enter key.
4. Press F10. Hit Enter key.
5. The computer restarts and you should be good to go

If that doesn't work, then try this:

Emergency BIOS recovery
I don't know if this is going to work on your laptop, but why not give it a try?

Here's how you do an ASUS Aptio recovery:

1. Download the correct BIOS for your model, and extract it. Copy it to FAT / FAT32 formatted USB flashdrive. I recommend using < 2GB size drive if possible.
2. Rename the BIOS file (should be like NV56VZ.213 or something when you download it from ASUS) to AMIBOOT.ROM, put it on a USB thumbdrive, insert into USB 2.0 port if you have one or USB 3..
3. Power up and press CTRL + HOME
4. The BIOS may reflash from the BIOS file on the USB thumbdrive.
5. Wait at least 7-10 min. If you have a flash drive that has an indicator LED then you'll at least know if it is working.

Another alternative is the same procedure, but not changing the name of the BIOS file.

By flashing the BIOS it will automatically reset the BIOS settings to default.

There is also this recovery method, but it is not useful for you as you can't see anything on the screen.

Let me know how it works out for you!

 

Thank you prikolchik for the reply.

Unfortunately, none of the above mentioned works. F2,F9,F10 combo does nothing, tried several times.
HDMI, VGA output are all dead.
I even managed to acquire a 1 GB USB stick, formatted FAT, and put on the BIOS with various names (AMIBOOT.ROM, N56VZ.215, N56VZ.BIN, N56VZAS.BIN etc.), but the led on the stick did not flash - not even once.

Now it is more than likely that the board died, sending back to RMA tomorrow.

 

The same thing happened with my with the same symptoms. RMA replaced the motherboard. I remember that I was just out of the bios after a change and puff ... black screen.

 

Oh well, at least we tried. I think there may still be a possibility to revive it without sending it back to ASUS, but I'd have to have physical access to the computer to try different things. Otherwise RMA is your best bet.

 

Agree, received a mail from the ASUS' repair shop (SIL.CZ) that the motherboard died and they will replace it as soon as they can (I'm under warranty).

I think the thread can be marked as SOLVED.

 

Thanks for the follow up, dave! No bueno that your board died, but glad Asus took care of you.

 

@elenax i am also having a similar problem... see this video.. N56VJ Not booting up after enabling "preboot xHCI" in the bios. - YouTube

the hdd spins , the usb key on lower left lights up for a second as well as the keyboard backlight.. does this problem mimic exactly yours??

actually i want to figure out if i have a bios reset problem or a faulty motherboard..

please see the video to compare your issue..

Thanks.

 

It is the same behavior. After boot in is no longer able to access the bios menu. No further operation is possible. I feel sorry for you. I still had a good experience with Asus support here in Italy. In 5 days it was repaired and shipped.

 

That was my exact behaviour as well..

Good for You Mine is there for 10 days (7 working days) and still in status "waiting for spare part"

 

FYI,

ASUS told me that they can't repair it at all (?) and they will giving back my money. Strange...

I know it is off topic - but I think I'll get an Lenovo Y500 and not trying to get the same N56VZ again

 

Wow. No exchange? Oh well. Hopefully the Lenovo will treat you well.

 

really strange.. so has asus asked to return all the accessories back to them for the refund? like sometimes it is not required to send in the battery and the adapter while RMAing.. so whats the case with you? what all had you sent for RMA and what all asus wants you to return back now for the refund to take place?

secondly.. any reason they mentioned of not able to repair the notebook.. i think this falls into the category of bad support!

which reseller did you purchase it from.. and in which place?

thanks for this information,

 

Hi , i find another solution to restore the notebook. Hope it helps.
[GUIDE] N56VZ bios replacement with CH341A ISP programmer

 

I had a similar problem with my asus n56vz. Out of nowhere my screen started to get weird colors. I checked the drivers but there was nothing wrong there. I opened my laptop, did some stuff, after that there was no screen at all :0 I opened it again to check all the cables and connections and tada there was a screen again. (I almost defecated in my pants in this time period) It has nothing to do with updates going wrong. Just for the helpless people out there