P755 Laptop Keyboard Backlight

I have a P755 laptop running Windows 7. Suddenly the "FN Z" function key to change how the keyboard baclight operates has stopped working. No new software install, just a Windows 7 auto update. Any ideas? Thanks

Please include your full model number when posting problems on the forums. It can be found on the bottom of your laptop. "P755" is only partial.
Do the other FN key combinations work?
- Peter

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Keyboard backlight auto turn on (T530)

I often use laptop top in low-light conditions and i`m tired of constantly pressing fn+space combination to turn light on.
Is there any way that turns backlight on automaticly when starting laptop?
Lenovo ThinkPad T530: i7-3520M/16GB RAM/128GB Vertex 4 SSD/1TB Seagate HDD + 8GB SSD Cache/NVS 5400M/FHD 1920x1080/9-cell BAT/ Backlit RU/Windows 7 Pro SP1 x64 ENG

The same question was asked in the W series board, I unfortunately don't think the answer is the one you are looking for; the systems use the same keyboards
http://forums.lenovo.com/t5/W-Series-ThinkPad-Laptops/Keyboard-backlight-settings-stay-on/m-p/113413...
Andy ______________________________________
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HP Pavilion 15-p159na - Where is the keyboard backlight setting to switch this on?

Can someone please tell me where to locate the keyboard backlight setting for the Pavilion 15-p159na laptop. I want to turn the backlights on but cannot locate this setting anywhere. Thanks.
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There isn't a setting. On the keyboard of a notebook that has this feature it is on the F5 key. It is the lit key in the following image from the keyboard of my current HP Product loan. It is the enable\disable backlight key.
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2015 Microsoft MVP - Windows Experience Consumer

Problem with Keyboard Backlight

Ok the keyboard backlight starts to turn on and off when it is in use, but the problem stops when i have it very low (1 or 2 niches) or a least it isn't noticeable. Has anyone had this problem?
Also when the keyboard starts to turn on and off the screen brightness also starts to change.
Any feedback is appreciated. The laptop is only one day old

Yes i have tried with th ambient light adjuster on and off, but the backlight keep going wild when they turn on. My fear is that with time it will completely stop working or it affects the screen in some way.
I have noticed that the screen is really bright, can this affect the sensor for the backlight on the keyboard?

Toshiba Satellite S70-B - Keyboard backlight not working?

Hello, I purchased a brand new Toshiba Satellite S70-B laptop with Windows 8 on it. When I received it, I removed the harddrive and installed a SSD with Windows 7 on it. After getting help from Toshiba support, all the drivers and harware seem to work except the backlight keyboard? I spoken to several Toshiba support techs and finally came to the conclusion to send it in to change out the keyboard. Yet I fear if I send it in, they will remove my SSD and reinstall a hardrive with Windows 8 as their solution. Does anyone have other suggestions... ?? Any help is appreciated.

I am having problems with my keyboard backlight too. I spilled water on mine and had to totally take it apart, until then I never had any problem with the shortcut key turning it on and off. I found this last night. Unfortunately. it didn't work for me Also became disappointed when I searched and searched for that magic timer on my desktop he spoke of. Let me know. 1) Shut down laptop
2) Turn on and start tapping the F2 button until you get to the BIOS screen
3) Scroll over to power management and change the setting for your backlit keyboard from off to on.
4) Press F10 to save and continue to start up.
5) Enjoy.
Believe it or not, I JUST fixed this issue on my own a665D laptop. I am still tweaking it though because after this, the shortcut keys don't allow you to turn the backlight off so I'm typing on a keyboard who's LED's wont go off as of yet. But this should help for now.--REVISION: I am done "tweaking it" as I have found the answer and it was glaring me in the face. Instead of just turning it to the ON position through BIOS, turn it to TIMER. You can set the amount of time you want it to stay on when ever you press a key and the FN+Z shortcut works when this is set up so you can turn the keyboard on, off, or to follow the timer right from your desktop. I hope this helped.
Asker's rating & comment
5 out of 5
You are officially awesome. Worked perfectly; I never would have ventured into the BIOS without an exact guide like you gave (Would have blown up the laptop or something lol). But anyway, thanks so much,

Keyboard Backlight Settings have no effect vaio Control Center

I have a Sony laptop, model SVE14A35CXH, and my backlit keyboard does work, it's just that the settings in Vaio Control Center, under Keyboard Backlight, the settings for that have no effect on the actual keyboard backlight. I make the setting to never turn on, for both on battery and plugged in, the keyboard still comes on when a key is pressed. I change the setting to turn on in low light, turn off after 60 seconds, it always turns off after 15. Any time I change the backlight settings, the actual keyboard backlight always turns on in low light conditions, and always turns off after 15 seconds if a key is not pressed. The settings have no effect on what the backlight does. Help would be appreciated.

Hi Derp-Derpinson,
Are you using a retail version of Windows? You mentioned before that you did a complete fresh install of Windows 8. Please follow the troubleshooting guidelines below:
Power Cycle - remove the battery and all peripherals -> press and hold the power button for 5 seconds. This will drain the electricity of the unit. Check again the backlight.
Reset BIOS.
Make sure that these drivers are installed or updated: (Sony® Firmware Extension Parser Device Driver, Sony® Shared Library, Hotkey Utilities). You may go to eSupport to download the drivers.
You may also reinstall Vaio Control Center.
Hope these work.
Regards,
Vincent
If my post answers your question, please mark it as "Accept as Solution"

Envy 6 How to dim keyboard backlight?

Envy 6 How do you dim keyboard backlight?
Manual says F5 and up/down arrow, but that doesn't change the level.
Does this work for anyone else with one of these?

Sean...
I have a Envy dv7 quad with a similar issue and don't have the proximity software installed - at least it is not in my programs list. Also look at the bleed. Note keys P, 1, 0, ', and a couple of others look just fine. What gets me the most is when the backlight is off, the bleed from the wireless F12 key.
I purchased last month and the first keyboard was worse. I have pics of it. I called and laptop was to be replaced. However a few days later, HP returned the original with nothing done. I called support this time and sent the laptop off to have the keyboard replaced. This is what I just got back today and it is now 6+ weeks since my order and $2600 for this.
I am now thinking send it back and get my money back and look for a Toshiba. Proximity software may help me think otherwise. However, I am not sure I want to live with all this bleed. Especially if I want to watch a movie. Just the F12 on is a big distraction.
Regards,
Don

Flex 2 15 Keyboard Backlight

The keyboard backlight stopped working. It worked for about a week. Now only the Num Lock key lights up. Any help will be greatly appreciated.

I have a new Flex 2 15 Core i7 and the keyboard backlight is not working at all when pressing FN + Spacebar!
Does anybody know if this laptop has the Keyboard Backlight function at all, or is experiencing the same problem?
Thanks!

Keyboard backlight Dell

Hi,
I bought a Dell xps 14 developer edtion laptop. I installed Arch with KDE; everything works well, but I have few questions:
1) I would like to set keyboard backlight off by default, but I couldn't find the corresponding udev rule. Does anyone know it?
2) When I use keyboard button to light/dim screen backlight, the KDE luminosity bar doesn't appear although the screen luminosity is correctly tuned. Why?
3) I wrote an udev rule (like in the arch wiki "power saving" item) setting lowest screen luminosity. All works well except when kde splash screen starts: suddenly the screen lights very much, then, after I type the pwd, it dims to the correct luminosity (I also set kde powersave option). How can I fix this problem?
Can you help me?
Thank you

Hi haseebanwar,
I am sorry about the situation, Please send me the system service tag or express service code through a private chat, I will see what best can be done.
Click on my username select start a private conversation and send me the details. Please refer to the link below where to locate the service tag or express service code.
http://dell.to/162b3za
Let me know about the progress

Keyboard backlight not working Z500

Good day! A few days ago has turned off keyboards backlight of lenovo Z500. I tried to reboot the laptop, but backlight still doesn't work as before by pressing FN+Space buttons. I hope this is a software bug and I could solve it without help of service center. But I can't solve it without your help, as the website and the Internet has no effect, and I have no desire to reinstall the system because of backlight. Maybe someone knows how to make it work again?

Hello,
I lost my keyboad lighting, after replacing my SSHD to SSD in my laptop.
1. I assembly with manual and checked 2x keyboard cable( power) is connected.
2. Tried to reinstall LEM(lenovo energy management).
3. Googled this problem, but didnt find similar.
Have you any suggestion, what should I do before using warranty, becouse I'm really need computer to work(I will do this anyway, my touchpad skin is peeling of )
Here is video how it look like: http://youtu.be/IpGe3gAAAXA
fn+space, no reaction
capslook,numlock lighting correctly
we can see weak backlight all the time.
Thanks in advance
Sebastian.
Moderator Note; subject edited; post merged in

X240 Keyboard backlight forgetful

Is there a setting to make my X240 remember keyboard backlight state? I have my laptop to NOT go standby when lid is closed because I move it around a lot. Even closing and reopening the lid will turn off the backlight and keep it off. Same goes for restarts but that's not a huge deal. Any settings I can change to get keyboard to remember backlight state?

I know this is a slightly old thread, but I have the exact same problem - it is very annoying!! Any solutions??

Flashing keyboard backlighting

Since upgrading my 4 year old MacBook Pro to Lion the keyboard backlight oscillates at a rate of about 20 times per minute. Disabling backlighting in the keyboard control panel does nothing. Ideas?

Hi everyone.
I had a similar problem with my keyboard. I got it replaced, and when I started using it, the keyboard backlight oscillates at a rate of once every 2 seconds. I googled and followed a bunch of hints, specially reseting the PRAM and NVRAM without success. Since the laptop was out of warranty I decided to open it up. Aparently there was nothing wrong with it not any other components, nad surprisingly, the kb light stop turning on and off... it simply worked! However, everytime I tried to put it back in place, around one inch away from closing it, the oscillating behaviour came back, and would disappear when took it back. At first I though it could be an electromagnetic interference, but it wasnt.
Here's what was it: The guys who repaired the keyboard, left a slit in the dark tape, so the keyboard's light would shine onto the luminosity detector, creating a loop in the backlight system! A piece of scotch tape made the trick. now the surrounding of the lumi. cell are completely dark, such that it only receives light through the little whole/lens above it.
I don't know if that's the same problem, but I thought it would be good to share.

Keyboard Backlighting Problem

Hello,
Recently, if i use the f5 or f6 keys to raise or lower the level of illumination on my laptops keyboard, the semi-transparent window comes up with the horizontal bar and the blocks to indicate brightness level, but has a O with a slash through it underneath the row of blocks, and neither keys have any effect.
I went to system preferences, enabled "illuminate keyboard in low light conditions" and it lit right up. I then tried to use the keys once it was already lit in this manner, and they functioned RIGHT until I uncovered the iSight camera (I covered it to cut off all light).
Any help?
Thanks in advance, and Happy Holidays!

Just to add to eww's observations, it seems to me that the location of the sensor in the upper bezel next to the iSight camera adds to the problems quite a bit. I find myself that the light falling on this point can be quite different from that falling on the keyboard itself. Simply changing the angle of the screen, or altering ones sitting position can produce substantial variations in the behaviour of the backlight. We have high "clerestory" windows in our house for example, and if I sit with my back to them the light hitting the light sensor can be far greater than the light falling on the keyboard itself.
I can see pluses in the location , too, especially on a small keyboard like the 13" one where ones hands would be likely to interefere with illumination levels, but by and large I think the location on the early MBPs under the speaker grids on either side of the keyboard was superior.
Maybe rather than using "blackout" tape, some sort of semi transparent filter material over the sensor would be an option?
Cheers
Rod

How can I turn off or dim the keyboard backlight?

I have a new HP Envy 14 Ultrabook. It has a backlit keyboard. I know many people like that "feature", but I don't. I assumed it would be easy to turn off the light in the control panel (e.g., in the device's settings), but there is no option. I can hit the F5 key to turn off the general lighting, but then that F5 key glows blindingly bright all the time. I want to either completely disable the keyboard backlights, or equivalently set the light level to be dim to the point of being completely off. But I can't find any setting to do that in the power options, device properties, etc. Nor has this question been satisfactorily answered in any other forums that I could find. Thanks in advance for your help.

I haven't tried this on a laptop but I've used it on all kinds of too-bright led's like on the electric toothbrush or the HEPA filter or modem, etc.: Take some nail polish and paint the bulb. A dark color or lighter color depending on how much light you want to block. Sometimes I paint the lights on things completely with dark nail polish and I've never had it cause a problem.
Since the bulb doesn't put out that much lumens it shouldn't hurt it and the worst case scenario would be that the bulb burns out and you replace it, or at least I think that would be the worst case scenario. On my Pavilion the f5 button turns the backlight on and off just fine though the power button is a bit too bright. I may paint it with nail polish. That said, when I do turn my backlight on using f5, it is much too bright and I really wish HP would make this adjustable. Why the heck wouldn't they?? I could paint that light but I really don't want to open up my computer, I'm superstitious that way.

How do i turn on the keyboard backlight? Pavilion dm4 2033cl

I am pretty positive that my laptop does have a backlight. However, I didn't need it at the time and I shut it off. But now I can't turn it on. I originally remembered adjusting it through the power options and that there was a little slider to adjust the brightness of either the screen or the keyboard. I could have been wrong though, since I no longer see the second slider for the keyboard brightness.
I have tried everything I could find to get the light to turn on. I used the mobility center but there is no keyboard option. I have tried the fn + spaacebar, fn +f5, and my keyboard does not have a specialized key to adjust the keyboard backlight either.
Anyone know how to turn on the backlight?
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View Solution.

Your notebook isn't delivered with a backlit keyboard. That feature is reserved for only a few select models. The screen brightness and keyboard backlighting are altogether different systems. Backlighting is controlled by a special key on the keyboard and display brightness can be controlled by two special keys on the keyboard.
The following image shows what the backlighting and display brightness keys looks like.
****Please click on Accept As Solution if a suggestion solves your problem. It helps others facing the same problem to find a solution easily****
2015 Microsoft MVP - Windows Experience Consumer

P755 Laptop Keyboard Backlight

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