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Help! G751JT-CH71 Keyboard backlight isn't working! - found the cause on mine...

kennycol
Level 7
D'oh! I just got my new Asus ROG G751JT-CH71 today and right off the bat I've got a problem. The keyboard backlighting won't light up! Ever since I got it it hasn't lit up at all. 😞 The rest of the laptop feels great so far and I really like it, but I haven't really done much because I don't want to invest any time on this thing if I'm going to have to send it back because of the keyboard lighting.

I've tried the normal Fn + F4 (keyboard brightness up) and once I enabled the on-screen display it would show the image of the keyboard and with the brightness increasing until max. And I've played around with Fn + F3 (dimming keyboard brightness). I've contacted Asus tech support and they've had me reinstall the ATK drivers, the Intel Chipset drivers, and the Keyboard Filter Driver. None of it has made any difference. I've rebooted the machine several times during the whole process.

Anyone have any ideas of what I can try? I REALLY don't want to send this thing back, but no way am I going to keep it without working backlighting for the keyboard. That's a required feature of a laptop for me.

Thanks!
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12 REPLIES 12

kennycol
Level 7
Can anyone who has a G751 verify that their keyboard lighting was on by default and it's only Fn + F4 and Fn + F3 that controls the lighting levels?

kennycol
Level 7
Oh, and my caps lock light is working...if I turn that on the light under the caps lock key lights up. So I don't think it's something like not getting power to those LED's.

kennycol
Level 7
Oh, one more tidbit of information. I read several threads on this forum about people having similar issues with their G750. Someone that was helping with one case suggested that the person either shutdown and start or just restart their machine while watching the keyboard for backlighting. They said that if the backlighting worked hardware wise it would flash as part of the starting/restarting process. So I tried that. Sure enough, no lights came on at all except for the caps lock enabled light. BAH!

Could someone who has a G751 whose keyboard backlighting works verify that shutting down your computer and restarting it does indeed cause not just the caps lock enabled light to light up, but all the keyboard lights? Please?

I can only verify that my G75VX did that - Have you tried to reinstall the driver?
The King of the north!

kennycol
Level 7
Ya. Working through Asus tech support they had me reinstall the ATK driver, the Keyboard Filter driver, the Intel Chipset driver, and one other that I can't remember right now. They also had me reset BIOS to factory defaults and then reset the whole laptop to factory defaults No luck. Still no lights. After all of that they told me to either send it in for repair or send it back to where I bought it.

I shipped it back today. /sob

They're out of stock on them and have no ETA that I could find.

hctisme
Level 7
Hopefully I can find some help here... I just bought the g771jm and it is really frustrating that the keyboard doesnt light up at login. after login it does. But that doesnt help in a dark room trying to logon. Anybody including techs know how to fix this.

hctisme wrote:
Hopefully I can find some help here... I just bought the g771jm and it is really frustrating that the keyboard doesnt light up at login. after login it does. But that doesnt help in a dark room trying to logon. Anybody including techs know how to fix this.


no way to fix that, that's the way it was designed

hctisme wrote:
Hopefully I can find some help here... I just bought the g771jm and it is really frustrating that the keyboard doesnt light up at login. after login it does. But that doesnt help in a dark room trying to logon. Anybody including techs know how to fix this.


hctisme, I run without the G750JH keyboard back-light most of the time...my wireless keyboard doesn't have a back-light either.

When I use a back-lighted keyboard I tend to look at the keyboard, when I use a non-lighted keyboard I don't look down and I type much faster with fewer errors.

I just powered off, and powered up to be sure, but with my G750JH the keyboard back-light comes on a few seconds after power up, and turns off when the login screen comes up - I have it disabled.

Isn't it strange, I want it off all the time, and it comes on at power up for login, you want it on all the time and it won't come on until after login.

Maybe try disabling the keyboard back-light after it comes on, login in and then reboot, see if the keyboard light comes on at power up like mine. Then you can enable it when it turns off after login...

If that doesn't work, keep a flashlight around.

I keep a small 3 cell AAA LED flashlight on the desk with me, I also have a USB powered light in my bag that I can snake over the keyboard for dark computer rooms.

http://www.amazon.com/s/ref=nb_sb_noss?url=search-alias%3Daps&field-keywords=3+cell+AAA+LED+flashlig...

http://www.amazon.com/s/ref=nb_sb_noss_1?url=search-alias%3Daps&field-keywords=usb+powered+light&rh=...

http://www.amazon.com/gp/search/ref=sr_kk_1?rh=i%3Aaps%2Ck%3Ausb+powered+lamp&keywords=usb+powered+l...

Please come back and let us know what you work out 🙂

hmscott
Level 12
kennycol wrote:
D'oh! I just got my new Asus ROG G751JT-CH71 today and right off the bat I've got a problem. The keyboard backlighting won't light up! Ever since I got it it hasn't lit up at all. 😞 The rest of the laptop feels great so far and I really like it, but I haven't really done much because I don't want to invest any time on this thing if I'm going to have to send it back because of the keyboard lighting.

I've tried the normal Fn + F4 (keyboard brightness up) and once I enabled the on-screen display it would show the image of the keyboard and with the brightness increasing until max. And I've played around with Fn + F3 (dimming keyboard brightness). I've contacted Asus tech support and they've had me reinstall the ATK drivers, the Intel Chipset drivers, and the Keyboard Filter Driver. None of it has made any difference. I've rebooted the machine several times during the whole process.

Anyone have any ideas of what I can try? I REALLY don't want to send this thing back, but no way am I going to keep it without working backlighting for the keyboard. That's a required feature of a laptop for me.
Thanks!


kennycol, it sounds like you tried everything, and it's not working, if you want the backlight working, swap for another one from the seller if it isn't too late, or RMA to Asus.