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  1. #1
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    Thumbs up G751JY Blinking Battery LED [Solved]

    Hello there,

    I've got a one year-old G751JY. Today when launching a random game, the fans suddenly started working real loud, as never before, for no particular reason. Then the battery LED started blinking green and orange. Might have been cause the day before, I switched off the computer in a hurry when noticing some elements overheated up to 80°C after only 10mn of The Witcher 3 (game was running smooth on screen though. Anyway).

    Aside from the fact I'll never play this game again, I tried a couple things including uninstalling/reinstalling the battery drivers from the device manager. Now the LED is blinking orange only.

    Now battery won't charge anymore, and judging from the sound the computer made when the LED started blinking, I think it's dead.

    The thing is, I don't want to send my computer in support nor repair cause my warranty is expired (2 weeks too late) and I'd like to try by myself removing and replacing the battery before making any expense.

    Heard it's impossible due to the fact it is a built-in, non-removable battery on this model.

    So two words : help please!

    Thanks.

  2. #2
    ROG Guru: Orange Belt Array
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    Don't worry mate! It sometimes happens due to the power management of the laptop. I've had a lot of trouble with blinking leds while I was working with the NBFC. So here's what you have to do: Restart laptop -> When RoG Logo appears press&hold the power button for like 10secs (during the time you will see the battery led going off and then back on ) -> then just start your laptop and you'll see that everything works just fine.

  3. #3
    Banned Array JustinThyme PC Specs
    JustinThyme PC Specs
    Laptop (Model)G752VY-DH72
    MotherboardRampage VI Extreme
    ProcessorI9 9940X
    Memory (part number)64GB DDR4 8x8 Corsair Dominator Platinum 3800 MHz @ C17
    Graphics Card #1ASUS Strix 2080Ti O11G @ 2.1GHz
    Graphics Card #2ASUS Strix 2080Ti O11G @ 2.1Ghz
    Graphics Card #3ROG Nvlink
    Graphics Card #4Have to feed animals
    Sound CardExternal Audioengine D1 24 bit 192kbps DAC
    MonitorASUS PG348Q @ 100Hz
    Storage #1Intel 905P 480GB U2 flavor
    Storage #2Samsung 850 EVO 1TB X2 in RAID 0, 960 PRO 1TB DIMM.2_1
    CPU CoolerHeatKiller IV PRO and VRM blocks ,Dual D5 PWM serial, 2X 480, 1X 360 RADS
    CasePhanteks Enthoo Elite 8X LL120 PWM, 3X LL140 PWM, 12 SP120 PWM 1x AF140 PWM
    Power SupplyCorsair AX 1500i
    Keyboard ASUS Claymore
    Mouse ASUS Spatha, Logitech MX Master
    Headset Sennheiser HD 700
    Mouse Pad ASUS ROG Sheath
    Headset/Speakers Audioengine A5+ with SVS SB-1000 Sub
    OS Win10 Pro 1809
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    Accessory #1 NetGear Prosafe 10GBe Switch
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    If the battery is toast it should still work plugged in unless the battery is shorted which can load down the power adaptor rendering the machine useless.
    Just keep in mind that is ASUS can replace the battery, then so can you. Its just not as easy as in the past.

    HERE is a tear down video of a G751 that shows where the battery is. Should not be too difficult to get it out. Havent had to replace it myself and as much as I like the fellow members Im not pulling my machine apart again just to see how the batter comes out. The video shows how to get to it and anyone who is capable enough to change the battery should be able to figure it out from there. Just a couple of screws and one connector I believe, maybe some double sided tape.

    There are plenty of places to source them, just do a search. OEM batteries go for around $130 and generic for $75, I always pay the extra to get the OEM just so I dont have issues with the battery being read by the system, happens a lot!

    Blinking orange usually denotes the battery is too hot, or at least thats what its supposed to mean. Not always the case. Bad drivers can do the same thing.

    Alternating green/orange means there is something wrong with the charging system, but again this can be false.

    First thing is to double check your power adapter is working, should be getting ~19-20VDC out of it. If that is good then move on to looking closer at the battery. The normal thing to do is to remove the battery and as much of a PITA as I know its going to be I would still recommend following the procedure to save yourself from the expense of a new battery if not needed.

    Shut down, remove power cord, remove battery, reinstall power cord, start without battery, go into device manager and delete everything there under the battery heading. Reboot (still with no battery) shutdown, reinstall battery and start up again. Go into device manager and check battery listings. If still flashing orange and your power adapter is good then its time for a new battery.

    The one thing that concerns me it the "sound it made". Could you be a little more descriptive? Popping, hissing? Did the sound happen then the light, at the same time, or the light then the sound?

  4. #4
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    Quote Originally Posted by NitroX View Post
    Don't worry mate! It sometimes happens due to the power management of the laptop. I've had a lot of trouble with blinking leds while I was working with the NBFC. So here's what you have to do: Restart laptop -> When RoG Logo appears press&hold the power button for like 10secs (during the time you will see the battery led going off and then back on ) -> then just start your laptop and you'll see that everything works just fine.
    JESUS CHRIST ! Sorry.

    It works!

    How the ***?

    Man I've spent the whole day on the internet and on the phone with customer service and I couldn't find a solution.

    Thank you soooo much ! )

    No need to remove the battery anymore. I'll just be more careful about my game settings in the future... lesson learned)

  5. #5
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    Quote Originally Posted by JustinThyme View Post
    If the battery is toast it should still work plugged in unless the battery is shorted which can load down the power adaptor rendering the machine useless.
    Just keep in mind that is ASUS can replace the battery, then so can you. Its just not as easy as in the past.

    HERE is a tear down video of a G751 that shows where the battery is. Should not be too difficult to get it out. Havent had to replace it myself and as much as I like the fellow members Im not pulling my machine apart again just to see how the batter comes out. The video shows how to get to it and anyone who is capable enough to change the battery should be able to figure it out from there. Just a couple of screws and one connector I believe, maybe some double sided tape.

    There are plenty of places to source them, just do a search. OEM batteries go for around $130 and generic for $75, I always pay the extra to get the OEM just so I dont have issues with the battery being read by the system, happens a lot!

    Blinking orange usually denotes the battery is too hot, or at least thats what its supposed to mean. Not always the case. Bad drivers can do the same thing.

    Alternating green/orange means there is something wrong with the charging system, but again this can be false.

    First thing is to double check your power adapter is working, should be getting ~19-20VDC out of it. If that is good then move on to looking closer at the battery. The normal thing to do is to remove the battery and as much of a PITA as I know its going to be I would still recommend following the procedure to save yourself from the expense of a new battery if not needed.

    Shut down, remove power cord, remove battery, reinstall power cord, start without battery, go into device manager and delete everything there under the battery heading. Reboot (still with no battery) shutdown, reinstall battery and start up again. Go into device manager and check battery listings. If still flashing orange and your power adapter is good then its time for a new battery.

    The one thing that concerns me it the "sound it made". Could you be a little more descriptive? Popping, hissing? Did the sound happen then the light, at the same time, or the light then the sound?
    Thanks Justin! Well, my problem has been solved just by pushing a button.

    To be more descriptive anyway, the fans AND the led started acting strange exactly in the same time. The fans went full crazy, I think all of them ran at 100% for a few seconds. Never heard that much sound coming from this laptop in one year of intensive use, I thought it was about to take off.

    Now that everything is back to normal, seems it was just a security to prevent overheating and battery damage anyway: the BIOS might have like, "disconnected" the battery and tried to cool it down as in an emergency.

    I'm very happy nothing was actually broken, the battery is now back to normal.

    Thanks for your support guys.

  6. #6
    ROG Guru: Orange Belt Array
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    Quote Originally Posted by Boulingrin View Post
    JESUS CHRIST ! Sorry.

    It works!

    How the ***?

    Man I've spent the whole day on the internet and on the phone with customer service and I couldn't find a solution.

    Thank you soooo much ! )

    No need to remove the battery anymore. I'll just be more careful about my game settings in the future... lesson learned)
    This actually happens quite often to ASUS Models. Well, it's like a common problem over here on the forums but it's not like it is going to occur too often. I just had this problem cause I messed with the laptop's fans while using NotebookFanController. The heat from Witcher 3 shouldn't be a problem since the system can handle up to 95C on CPU, and at that moment it will first throttle the CPU to like 3000Mhz in order to let it cool down. So the weird fan behavior might have come from an issue with the Embedded Controller where the fans, battery, temperatures, sleep mode and all these things are being controlled.

  7. #7
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    I'll just be more careful about my game settings in the future... lesson learned)
    No need for that, the issue happens sporadically

  8. #8
    Banned Array JustinThyme PC Specs
    JustinThyme PC Specs
    Laptop (Model)G752VY-DH72
    MotherboardRampage VI Extreme
    ProcessorI9 9940X
    Memory (part number)64GB DDR4 8x8 Corsair Dominator Platinum 3800 MHz @ C17
    Graphics Card #1ASUS Strix 2080Ti O11G @ 2.1GHz
    Graphics Card #2ASUS Strix 2080Ti O11G @ 2.1Ghz
    Graphics Card #3ROG Nvlink
    Graphics Card #4Have to feed animals
    Sound CardExternal Audioengine D1 24 bit 192kbps DAC
    MonitorASUS PG348Q @ 100Hz
    Storage #1Intel 905P 480GB U2 flavor
    Storage #2Samsung 850 EVO 1TB X2 in RAID 0, 960 PRO 1TB DIMM.2_1
    CPU CoolerHeatKiller IV PRO and VRM blocks ,Dual D5 PWM serial, 2X 480, 1X 360 RADS
    CasePhanteks Enthoo Elite 8X LL120 PWM, 3X LL140 PWM, 12 SP120 PWM 1x AF140 PWM
    Power SupplyCorsair AX 1500i
    Keyboard ASUS Claymore
    Mouse ASUS Spatha, Logitech MX Master
    Headset Sennheiser HD 700
    Mouse Pad ASUS ROG Sheath
    Headset/Speakers Audioengine A5+ with SVS SB-1000 Sub
    OS Win10 Pro 1809
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    Accessory #1 NetGear Prosafe 10GBe Switch
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    Nice Info to store in my brain somewhere, thanks for the tip NitroX! Im an old fart but still learn something new everyday!

    +1 on Rep!

  9. #9
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    HI
    No Blinking and all..
    But shows 12% available (plugged in, charging)
    If i remove adapter, it power off like a TV on power cut.

    Please help me..

  10. #10
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    14 month old Asus G751jm No longer takes a charge

    My computer was working perfectly fine, I returned to work next day, plugged it in and it would not take a charge. Battery is at 0%, Battery LED blinks orange/ Green cycle. PC shuts down immediately when unplugging a/c adapter. I tried the uninstall/scan for changes technique, also tried to hold power button down. I even rolled back to Windows 8.1 thinking it could be a software issue. My last hope is to buy a new battery and see if that works. Just to confirm I did the power button hold correctly this is what I tried.

    I powered on the computer, when Asus logo appears, I held the power button down for 1 minute, this of course shuts the computer off, the battery LED blinked a few times then went out. When I pushed the button again, the computer comes on but still no battery charging. It seems like it want to try for about five seconds before it goes back to the green/orange blinking.

    I'm pretty bummed out about this, I babied this computer, Infact, I'm typing this on my old g74 rog machine that still works. I've looked at a video on how to remove the battery which seems pretty easy. But still a pain in the ass none the less.

    I have to admit, I really like the g751. But with windows getting worse each version, cramming updates down our throat, and 1,400 dollar computer that died in 14 months pushed me to a brand new Mac book Pro. I've gone back and forth over the years due to the work I do, I'm a cinematographer/ film director/editor. It really sets me back when my computers don't work properly.

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