A few issues with G751series

[Avermra]

Updated 11/26/16 with new information

Hi all,

I have purchased a G751 series gaming laptop last year. Everything was going smoothly except for 2 things.

1. The battery eventually deteriorated, which is kind of short (just one year). It went from 96% (plugged in, not charging) to 84% to 64% to now zero. It will start but very quickly randomly turn itself off. I would assume at this point I need to get a new battery? If I do, I have looked into it but did not find any OEM batteries anywhere. Can anyone give me a hand here? Is there anything else I can do other than getting a battery replacement that I can try while I find/wait for a new battery (for example, if I remove the battery would it eliminate the random shut offs that I assume is happening from critically low battery level)? If I absolutely cannot find an OEM now, is there a non-OEM one people can vouch for?

2. Even before the battery is completely unable to charge, I noticed that my laptop has a slow start when I boot it from being off. The "republic of gamer" icon will show up, disappear, and then show up again. Everything else is still performing similar to when the laptop is new; it's just the startup that feels longer than before. What can lead to this problem?

Update 1: 11/16/16: I took the computer into a repair shop to change the battery. The new battery works and charges, but the random shutoff still takes place both in and out of gaming.

We suspected that it may be a charging circuit problem and went ahead and removed the battery altogether, but the same problem persists when I am playing games (I tested this with WoW, Starcraft 2, and Counter Strike: GO): the computer actually shuts off as soon as one of these games is loaded, without giving a chance to do anything else. The computer works fine otherwise: I can load youtube videos over several days.

As far as software goes I have updated all BIOS as well as the GPU drivers, so I think all of my drivers are up to date.

Update 2: 11/26/16: I performed a cleansweep to clear my internet cookie/cache just as a routine maintenance. I can actually load into WoW now without the computer turning off. The game has been running for 30 minutes now (update: it shut off at 2 hour mark). I will continue monitoring to see if shutoff happens at any given point. I am unsure on why cleansweep may have had an effect on this.

Update 3: 12/5/16: I took it back to the computer store last Monday (11/28/16) and left it there. The repair personel there was unable to repeat my problem of having shutdown so I took it back on 12/1/16. Laptop ran fine without shutdown for 3-4 days until this morning (12/5/16) with another shut down. I will continue to monitor it to see if it starts happening again more frequently.

This is extremely frustrating and honestly a laptop lasting barely past warranty is something that is unacceptable. Thanks for your help.

[Clintlgm]

Yes unless you very handy at dissembling Notebook computers you'll need to send it Asus Repair to have the batteries changed, Perhaps a local shop might do this for you?
You mention nothing about Windows version so my guess with a slow boot would have something to do with windows updates. Window 10 wants to replace your specific hardware divers with there Generic drivers, this causes all kinds of issues with G notebooks. You might want to shoot Bill@Asus a PM for his recommendation on the Battery issue, he is the Repair Rep in these forums.

[Avermra]

Clintlgm wrote:
Yes unless you very handy at dissembling Notebook computers you'll need to send it Asus Repair to have the batteries changed, Perhaps a local shop might do this for you?
You mention nothing about Windows version so my guess with a slow boot would have something to do with windows updates. Window 10 wants to replace your specific hardware divers with there Generic drivers, this causes all kinds of issues with G notebooks. You might want to shoot Bill@Asus a PM for his recommendation on the Battery issue, he is the Repair Rep in these forums.

Thank you for your help. I am currently using Windows 8.1.

As far as G751 goes. If I just remove the battery, would it resolve this issue? It is hard to find an OEM bettery and because this machine is out of manufacturing warranty the repair is estimated to be at least 700 dollars, which is approaching the cost of a new machine.

[Avermra]

I am still at a loss on this topic. Looking around in this forums i found people with similar issues

https://rog.asus.com/forum/showthread.php?82359-G751J-Battery-not-charging-and-sudden-shutdowns

Apparently after updating my BIOS the laptop will be able to function while plugged in. However, the zero% and not charging issue remains unchanged.

When I contacted Asus online chat support they mentioned the cost for replacing the battery and working on it will cost 700 since it is out of warranty. However, this seems like an issue that is consistently happen for a lot of G751 series user. I am wondering if there are ways I can get this repaired without basically paying for a new machine.

Thanks

[Clintlgm]

PM Bill@Asus he is our repair Rep in these forums perhaps he can help you out? otherwise if your warranty has expired you'll have to do it yourself or have a shop do it. If your battery is the only problems they can be found on Ebay and installed some disassembly if required to get to them.

[Avermra]

updated with current situation. I honestly think it's not just the battery anymore

[cdma2k]

1. G751 has had lots problem on the battery
2. the slow start might be caused by the windows. The windows tends to accumulate corrupted system files and memory leaks after fresh installation and use. Once it is serious enough, the system starts to behave abnormally. try a reset to see if the problem goes away?

[Avermra]

cdma2k wrote:
1. G751 has had lots problem on the battery
2. the slow start might be caused by the windows. The windows tends to accumulate corrupted system files and memory leaks after fresh installation and use. Once it is serious enough, the system starts to behave abnormally. try a reset to see if the problem goes away?

Thanks for the quick reply. My primary issue is that I can't even game right now using it as a workstation, without battery installed. This has never been an issue with any of my gaming laptops in the past. This indicates to me that there might be something wrong with the motherboard, or that it cannot sustain the power needed to load a game (none of the games I play really requires high graphical settings nor heavy cpu/ram usage) without a battery.

I don't have a huge issue with the second issue. Slower start is not a deal breaker and updating BIOS seems to have improved, if not fixed, the issue.

[Avermra]

posted some updates to see if any has other ideas. Thanks

[Avermra]

bump for more help. Problem still persists but (hopefully) is less frequent.