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View Full Version : Unusual BIOS flashing issue - G751JY Bricked + Bios Failure Recovery



Edweird
05-11-2015, 07:24 AM
Hey, everyone.

So the sound issue of yesterday is long gone now and I'm happy to have been part of the whole thing.
Laptop has been working great for me but started acting funny, GPU drivers crashing regularly (I check regularly if I have GPU OC on, I don't) and blue screens every 1-2 weeks (I assumed this was XTU's fault with the dynamic undervolt, which was stable at -90 up until 1.5 months ago but appears to cause trouble now, so I changed it to -50).

So against my better judgment I decided to give the new 207 a go in hopes that some of the issues may be decreased and i wanted to see for myself if anything related to G-SYNC is working now (back when that driver came out it did, but flickered a lot).

So I took my trusty 2GB, FAT-formatted USB drive and popped the new .207 file onto it. This drive has been used to great success in this configuration in flashing several laptops, including my old N61Ja, which has been flashed with it upwards of 10 times.

The BIOS hardware and software in that laptop is very similar to the G751JY and the interface is literally the same.
I started up ASUS Easy Flash from the BIOS sicne that's known to be most reliable and it read the new .207 BIOS file just fine and asked for a go-ahead. I chose Yes.

Aaaaand...sigh. 10% in on the "Deleting Flash" or w/e procedure it just cut off, the laptop shut itself off and now it's in that all-too-familiar state where it turns on with no keyboard backlight and no screen backlight, restarting itself with the LEDs on and the fans running. It tries to read off the USB drive but it doesn't manage.

Now - I'm making it obvious - it never got to using the BIOS file on the flash drive. ASUS Easy Flash killed it before it was done removing the old one. I've already messaged Support and requested escalation as I've never seen this process fail like this before.

I know exactly how to disassemble the G751, there are several videos of it online, but the CMOS battery is hidden under the motherboard. You have to remove the keyboard section, which is a potentially damaging process as it is, remove the back speaker plate, detach the screen, detach the motherboard and everything attached to it, flip it and remove the battery. This trick used to work on the N61 when something went kaboom with the BIOS but the risk of damaging something this way is too big and I've read that these new models have memory backups for the BIOS, which the CMOS battery trick doesn't get around - and I want to preserve the warranty in case I absolutely must send it in.

So...anyone have any ideas? Blind flashing, some type of software-based recovery? Again, the machine never got to flashing the new BIOS, so it's unlikely that caused it, and is currently not POSTing. The old adage of "don't touch the BIOS unless you really must" stands true.

Thanks.

Specifications as per standard support standard:

Full model name under the notebook:
G751JY-T7065D


Bios version:
205, attempted update to 207

CPU:
i7-4710HQ

Memory amount in GB:
8

GPU:
nVidia GTX 980M, 4GB

SSD/HDDs/Optical drives:
1TB HD, Super-Multi DVD

AC Adapter:
Original ASUS 230w adapter

Operating system:
Win8.1 64-bit

Original ASUS factory image or clean install?
Clean install, own Win8.1 x64 copy received from MSDN through student program.

Microsoft Activated yes/no?
Yes

Drivers Installed (include version and especially any non-ASUS approved notebook drivers):
Original ASUS drivers, latest ones to date for everything.

Any third Party temp/voltage software installed:
No

System Overclocked (provide details)?
Yes, using Intel XTU. Multipliers set to x36 as permitted by BIOS version .205, Dynamic undervolt set to -50mV.
ASUS GpuTweak, latest, set off at time of issue.

Any hardware upgraded?
No, all factory original hardware.

Bridger
05-11-2015, 09:23 AM
I think you won't have an option to either send it in or to open it up by yourself if the removal of the Bios battery will fix you problem.

I flashed my Bios yesterday in windows like I am doing it now since years on different machines and never had a problem.

Edweird
05-11-2015, 09:43 AM
I couldn't understand what you meant with your first sentence but I think removing the battery wouldn't work this time because Easy Flash must have completely screwed the file up. I don't know whether or not any possible solutions rely on at least a semi-intact BIOS.

I have had issues before due to my own errors that I was not aware of before, but this is a different problem altogether.

Fishman922
05-11-2015, 12:38 PM
Unless G751's have a backup BIOS section (a dual bios), the BIOS probably needs to be taken out and re-flashed by a BIOS flasher.
Most of us cannot take the BIOS off a motherboard and have a flasher and can put it back without damaging something.....
Once a BIOS is corrupt to that point there is usually no return short of the above.

I would probably contact asus and send it in. :( Just my 2 cents.

Edweird
05-11-2015, 01:08 PM
Could be. Problem is, I have to ship it to the store I bought it from for them to make the decision of whether or not to fix/change it, not ASUS. I don't know what they'll say.

But that's a last resort, I'm waiting on ASUS Support techs to call it. I can't imagine what sort of unfortunate circumstance conspired against me. Perhaps that the drive was formatted in FAT instead of FAT32...but then what does that have to do with Easy Flash deleting the old data...especially since I can count at least 5 people used a less reliable method (I'm told it is, anyways, WinFlash etc.) that got away with it no problems.

About the second BIOS, it baffles me why after all this experience and tech that has gone into building these machines, they wouldn't have introduced a backup BIOS like the rest of their ROG products. Especially considering how valuable and expensive these are compared to a desktop of the same performance. I understand that these machines are not as accepting of overclocks but still - people who like to tinker (like us) are a large part of the userbase, same as how people who DON'T tinker are a large part of the userbase of the desktop motherboards with double BIOS setups who just want a reliable mobo.

Clintlgm
05-11-2015, 02:26 PM
It could very well be that your much used USB FAT is defective. It sounds like you have been using it for awhile and other files may have corrupted your 207.bin file.
I'm not sure on the 751 but the G75 have a last chance BIOS flash. You would have to still have the original BIOS file still on the Root of your Hard drive. then Control + Home hold these down boot the notebook hold until Ezflash starts. If you don't have that file still on the root of your OS Drive it won't work. You could pull your hard drive and add the BIOS file rename it G751.bin? that is how the G75 were set up. Hmscott or cl-albert would know for sure. PM cl-albert if he doesn't reply soon.

Edweird
05-11-2015, 02:33 PM
I've already pm'd cl_albert, thank you for the advice, I didn't know this process existed. I doubt it's changed much.

The flash drive is quite old, yes, but I did a clean format on it before I copied the file over.

Clintlgm
05-11-2015, 03:13 PM
Yes I only assumed that it would still be current. The file name is critical in getting it to work. I only remember G75.bin but it could have been G75VW.bin. I don't really remember and I have never needed it.

Edweird
05-11-2015, 03:56 PM
It appears a whole slew of ASUS laptops used this fix. According to popular opinion, putting a G751JY.BIN on the original HDD should do it with either CTRL+HOME or CTRL+ALT+HOME on the older models.

I distinctly recall there being a BIOS file on my harddrive on this laptop and my previous N61 that I am 100% sure was a BIOS flash file that i am sure I did not put there, must have been automated backup or something.

I'll try this first thing when I get back home from work.

Cracken
05-11-2015, 04:23 PM
I do not think that removing battery will help in this case... And i do not understand how this happen. Every bios flash must pass reading whole file and verification and then can erase old bios and flesh new one. So in theory there is no room for mistake and if any part fails there is why to go back. In your case there is not.
If your USB was bad, it should came with error in read and it is ok.
If your bin file was unreadable at some point same as line before.
Something strangely happen . Only solution before send it back is to try to flash recovery bios like post before mine .

Edweird
05-11-2015, 04:43 PM
Yup, that's pretty much what happened. I'm trying as I write this.

Clintlgm
05-12-2015, 06:47 PM
Yes Asus put that file on there just for this purpose. It should still be there unless you deleted it or clean installed or course that would have overwritten it.

Clintlgm
05-12-2015, 06:51 PM
Yes Asus put that file on there just for this purpose. It should still be there unless you deleted it or clean installed or course that would have overwritten it. Keep trying it takes a few tries as I remember for some people. I hope this works for you

GhostriderZ85
05-12-2015, 08:20 PM
Bios is like an operating system, you can't fix a corrupted/deleted bios or operating system by resetting or removing the battery, it has to be reinstalled.

Edweird
05-13-2015, 07:46 AM
I understand the principle of what you're saying (I assume you think I don't understand what a BIOS is, I think I was clear enough with my explanations thus far) - thing is, whenever the BIOS got messed up on the N61, it would reset itself somehow upon CMOS reset. I guess it was configuration changes every time. I was hoping only this much would have happened here so that perhaps popping the battery would have fixed it - I'm not saying it would have but perhaps it was worth a try.

I've contacted cl-Albert. Outside of keep trying to blind flash it somehow he suggests the RMA I was hoping to avoid.
I don't know what to think of this - it's either that the USB drive has been damaged somehow, which I find unlikely, or ASUS Easy Flash actually failed, which is equally unlikely. I'm afraid what the ASUS tech center would say and whether or not this would be covered by warranty.

hmscott
05-13-2015, 09:13 AM
I understand the principle of what you're saying (I assume you think I don't understand what a BIOS is, I think I was clear enough with my explanations thus far) - thing is, whenever the BIOS got messed up on the N61, it would reset itself somehow upon CMOS reset. I guess it was configuration changes every time. I was hoping only this much would have happened here so that perhaps popping the battery would have fixed it - I'm not saying it would have but perhaps it was worth a try.

I've contacted cl-Albert. Outside of keep trying to blind flash it somehow he suggests the RMA I was hoping to avoid.
I don't know what to think of this - it's either that the USB drive has been damaged somehow, which I find unlikely, or ASUS Easy Flash actually failed, which is equally unlikely. I'm afraid what the ASUS tech center would say and whether or not this would be covered by warranty.

Edweird, it's rare, but it does happen, and it should be covered by Asus warranty - it was a simple failure during a normal operation.

I have only had it happen once to an MSI MB, and they fixed it free outside of warranty.

Please come back and let us know how is works out :)

Edweird
05-14-2015, 10:36 AM
Got the file and put it into various possible locations according to what I've seen in other ASUS laptops, including, of course the root of the drive.
G751, G751JY etc in .ROM and .BIN and .205/.207 extensions, same with another USB drive.

No key combinations did anything. Interestingly, the Steam key still turned the laptop on but the keyboard never lit up. A local tech store does warranty service for ASUS and they seem to think that the process stopping during BIOS deletion is not a normal thing at all and had the laptop sent to ASUS's central service center in my country. It's gonna be at least a week until it's back from the service center.

They said these are a bit short unit-wise and they have more of the newer sets of motherboards - so if I'm lucky and a BIOS reset/flash doesn't do the trick I might end up with a 4720 laden board instead, or a completely different unit altogether.

It seems far more likely that they don't honor the warranty to me but we'll see, maybe there will be a positive outcome :P i just hope they remember to put the damn .207 on...

Cracken
05-14-2015, 11:55 AM
hope that you will be covered by warranty , fingers crossed :-)

nice.lw
05-14-2015, 03:57 PM
https://rog.asus.com/forum/showthread.php?54306-g751-bios-202-question-missing-boot-options-for-USB&p=454427&viewfull=1#post454427

https://rog.asus.com/forum/showthread.php?54306-g751-bios-202-question-missing-boot-options-for-USB&p=456318&viewfull=1#post456318

Edweird
05-18-2015, 10:43 AM
49366

:)

I hope this is past the stage of deciding whether to service the thing or not.

EDIT: Good news!

Just got a call from the service center - apparently something went haywire and they had to swap the whole motherboard out O.o.

Anyways, it's on its way home and I will have it with me tomorrow.
Thanks for the assistance provided. i will report on performance and configuration etc. ASAP.

Edweird
05-19-2015, 03:58 PM
It's home. :)
And look what I found!

49383

The configuration is the same but they changed the mobo for one that has the connector. :D
And they even had it updated to 207 to boot.

49384

So far I've noticed it runs quite cool - GPU hasnt gone over 75 degrees in 3 hours of gaming and CPU peaked at 3.7GHz, which is funny considering the multiplier is set to x36.

Clintlgm
05-19-2015, 08:02 PM
It's great to see another successful RMA and you even got the M.2 connector

winyl
01-02-2016, 07:54 PM
For it to work on G751JY:
1.have a FAT32 formatted usb stick handy,THIS IS A MUST. NTFS FORMATED STICK WON"T BE READ BY BIOS.
2. Put the bios file on it in root of directory structure, rename it G751JY.bin put the original G751JYAS.211 with it, I used both, not sure which one worked,
3. insert usb stick into any usb port + connect laptop to power brick and p-brick to mains, battery neeeds to be charged 90%, it will not let the bios flash if it is less,
4.press and hold right Ctrl+Home and than press Pbutton and release. Keep holding Ctrl+Home until EZFlash appears on screen. Release Crtl+Home.

If you like to put bios file on HDD/SSD, the bios file MUST be on the first partition of the HDD/SSD. Note that from factory G751 has a small, if I remeber correctly, 128MB UEFI partition as first, it is FAT32 formatted.
But do not take my word on it, confirm that with partition manager of your choice.And you have to put the bios file there. Can you brake sthing if you do that? Maybe.

As I see G752 has NTFS driver in the bios, maybe with G752 NTFS formatted stick also works. But this has to be confirmed by G752 owner,as I am not him.

YOU DO FLASHING OF BIOS AT YOUR OWN RISK! I WILL NOT BE HELD RESPONSIBLE IF YOU BRICK YOUR LAPTOP!
Happy flashing :)
Someone can make this sticky for other to easly see it.

Gps3dx
01-02-2016, 08:20 PM
For it to work on G751JY:
1.have a FAT32 formatted usb stick handy,THIS IS A MUST. NTFS FORMATED STICK WON"T BE READ BY BIOS.
2. Put the bios file on it in root of directory structure, rename it G751JY.bin put the original G751JYAS.211 with it, I used both, not sure which one worked,
3. insert usb stick into any usb port + connect laptop to power brick and p-brick to mains, battery neeeds to be charged 90%, it will not let the bios flash if it is less,
4.press and hold right Ctrl+Home and than press Pbutton and release. Keep holding Ctrl+Home until EZFlash appears on screen. Release Crtl+Home.

If you like to put bios file on HDD/SSD, the bios file MUST be on the first partition of the HDD/SSD. Note that from factory G751 has a small, if I remeber correctly, 128MB UEFI partition as first, it is FAT32 formatted.
But do not take my word on it, confirm that with partition manager of your choice.And you have to put the bios file there. Can you brake sthing if you do that? Maybe.

As I see G752 has NTFS driver in the bios, maybe with G752 NTFS formatted stick also works. But this has to be confirmed by G752 owner,as I am not him.

YOU DO FLASHING OF BIOS AT YOUR OWN RISK! I WILL NOT BE HELD RESPONSIBLE IF YOU BRICK YOUR LAPTOP!
Happy flashing :)
Someone can make this sticky for other to easly see it.
Thank you very much for this knowledge and guide.
I've added a link to this post in the STICKY THREAD " Guide: How to install windows 8/8.1/10 The proper ..." (https://rog.asus.com/forum/showthread.php?76993-Guide-How-to-install-windows-8-8-1-10-The-proper-way-(UEFI-based-installation))under "(Very) Usefull Threads".

Sean OBrien
10-24-2017, 04:34 AM
For it to work on G751JY:
1.have a FAT32 formatted usb stick handy,THIS IS A MUST. NTFS FORMATED STICK WON"T BE READ BY BIOS.
2. Put the bios file on it in root of directory structure, rename it G751JY.bin put the original G751JYAS.211 with it, I used both, not sure which one worked,
3. insert usb stick into any usb port + connect laptop to power brick and p-brick to mains, battery neeeds to be charged 90%, it will not let the bios flash if it is less,
4.press and hold right Ctrl+Home and than press Pbutton and release. Keep holding Ctrl+Home until EZFlash appears on screen. Release Crtl+Home.

If you like to put bios file on HDD/SSD, the bios file MUST be on the first partition of the HDD/SSD. Note that from factory G751 has a small, if I remeber correctly, 128MB UEFI partition as first, it is FAT32 formatted.
But do not take my word on it, confirm that with partition manager of your choice.And you have to put the bios file there. Can you brake sthing if you do that? Maybe.

As I see G752 has NTFS driver in the bios, maybe with G752 NTFS formatted stick also works. But this has to be confirmed by G752 owner,as I am not him.

YOU DO FLASHING OF BIOS AT YOUR OWN RISK! I WILL NOT BE HELD RESPONSIBLE IF YOU BRICK YOUR LAPTOP!
Happy flashing :)
Someone can make this sticky for other to easly see it.

My G751JY very briefly displays the Asus splash screen, then turns the screen black. The keyboard and LCD backlight are on, but nothing happens after that. Following these instructions nothing happens. I took it apart and pulled both CMOS battery and main battery, removed the WiFi card just in case. No access to Bios.
Is there some other key combo, or is my baby just dead? Can't really afford to replace it, just got a VR setup to use with it, too. Was so cool... ;_;

yalcin80
06-12-2018, 01:03 AM
For it to work on G751JY:
1.have a FAT32 formatted usb stick handy,THIS IS A MUST. NTFS FORMATED STICK WON"T BE READ BY BIOS.
2. Put the bios file on it in root of directory structure, rename it G751JY.bin put the original G751JYAS.211 with it, I used both, not sure which one worked,
3. insert usb stick into any usb port + connect laptop to power brick and p-brick to mains, battery neeeds to be charged 90%, it will not let the bios flash if it is less,
4.press and hold right Ctrl+Home and than press Pbutton and release. Keep holding Ctrl+Home until EZFlash appears on screen. Release Crtl+Home.

If you like to put bios file on HDD/SSD, the bios file MUST be on the first partition of the HDD/SSD. Note that from factory G751 has a small, if I remeber correctly, 128MB UEFI partition as first, it is FAT32 formatted.
But do not take my word on it, confirm that with partition manager of your choice.And you have to put the bios file there. Can you brake sthing if you do that? Maybe.

As I see G752 has NTFS driver in the bios, maybe with G752 NTFS formatted stick also works. But this has to be confirmed by G752 owner,as I am not him.

YOU DO FLASHING OF BIOS AT YOUR OWN RISK! I WILL NOT BE HELD RESPONSIBLE IF YOU BRICK YOUR LAPTOP!
Happy flashing :)
Someone can make this sticky for other to easly see it.


First of all Thank you very much. The subject you opened is very useful to me. You saved my computer. I just wanted to thank you. Thank you so much.


CTRL + HOME
2GB Flash Disk

Original Rom G751JT.bin

Pedrogriff
09-17-2018, 08:23 PM
For it to work on G751JY:
1.have a FAT32 formatted usb stick handy,THIS IS A MUST. NTFS FORMATED STICK WON"T BE READ BY BIOS.
2. Put the bios file on it in root of directory structure, rename it G751JY.bin put the original G751JYAS.211 with it, I used both, not sure which one worked,
3. insert usb stick into any usb port + connect laptop to power brick and p-brick to mains, battery neeeds to be charged 90%, it will not let the bios flash if it is less,
4.press and hold right Ctrl+Home and than press Pbutton and release. Keep holding Ctrl+Home until EZFlash appears on screen. Release Crtl+Home.

If you like to put bios file on HDD/SSD, the bios file MUST be on the first partition of the HDD/SSD. Note that from factory G751 has a small, if I remeber correctly, 128MB UEFI partition as first, it is FAT32 formatted.
But do not take my word on it, confirm that with partition manager of your choice.And you have to put the bios file there. Can you brake sthing if you do that? Maybe.

As I see G752 has NTFS driver in the bios, maybe with G752 NTFS formatted stick also works. But this has to be confirmed by G752 owner,as I am not him.

YOU DO FLASHING OF BIOS AT YOUR OWN RISK! I WILL NOT BE HELD RESPONSIBLE IF YOU BRICK YOUR LAPTOP!
Happy flashing :)
Someone can make this sticky for other to easly see it.

Hi guys, I have been using that ctrl+home and flash BIOS for like 3 years already because my laptop keeps getting The Sam e issue from time to time. It has always worked, until now because my battery is now dead, and The Flash utility wont Flash The BIOS with out The battery, any suggestions? I Live in Brazil and this laptop model never came to here, so I am Aldo having a hard time finding a New battery for it.