gmping
1 Copper

Backlight Keyboard no longer works. Studio XPS 1645

I noticed last week that the back light option on my keyboard no longer functions.

I know the Fn key works on the keyboard as I can perform other Fn+ tasks and I know that the right arrow key (which is the same combo key that controls back-lighting) also functions on it's own.

Aside from normal Windows 7 updates, the only changes to my laptop recently has been flashing to the A07 bios and the new power supply mailed out by Dell.

Am I missing a software option somewhere that defaults my back-lighting to off? Or is it a mistake (or intention) of the A07 bios to disable this feature given the recent power supply throttle issues with this model laptop.

Any suggestions/help would be appreciated!

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25 Replies
rbgatti
1 Copper

Re: Backlight Keyboard no longer works. Studio XPS 1645

I'm at BIOS A07 with the new PSU and the backlight works fine; no change.

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gmping
1 Copper

Re: Backlight Keyboard no longer works. Studio XPS 1645

Hmm, well if it's not the bios... anyone have any other ideas?

I tried Technical Support and could not resolve the issue.

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7- Thorium

Re: Backlight Keyboard no longer works. Studio XPS 1645

gmping,

 

Try going to Drivers & Downloads, enter your service tag number. Under applications, download and install Dell QuickSet. If it got uninstalled of somehow got corrupt, it stops those functions.

 

 

Rick 

#DellRockstar

What is a Dell Service Tag and how do I locate it? 

Original poster, If you have solved your problem, can you please mark the correct thread(s) with your solution. Thanks 

Welcome to Dell Community!

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gmping
1 Copper

Re: Backlight Keyboard no longer works. Studio XPS 1645

gmping,

 

Try going to Drivers & Downloads, enter your service tag number. Under applications, download and install Dell QuickSet. If it got uninstalled of somehow got corrupt, it stops those functions.

 

 

Rick 

Thank you Rick for the suggestion. It partially solved my problem.

I downloaded the quickset drivers, uninstalled the current quickset, and fresh installed the current quickset drivers with reboots between each step.

On the positive side, I was able to get my touchpad backlight buttons back. However, the keyboard light is still unresponsive.

I went into the Windows Mobility Center and checked my keyboard backlighting settings and they I have backlighting, bright, and never off, options all selected.

 

Anyone else have a "bright" idea for my lighting problem? emoticon.Smile.title

 

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egl15drvr
1 Copper

Re: Backlight Keyboard no longer works. Studio XPS 1645

I have the same computer (1645) and have the same problem with the backlit keyboard.  I tried all the suggestions above without success.

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dkim247
1 Copper

Re: Backlight Keyboard no longer works. Studio XPS 1645

Hit the following buttons simultaneously as many times you need to:

"Fn" + "Right arrow key"

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iaaaan
1 Copper

Re: Backlight Keyboard no longer works. Studio XPS 1645

I have exactly the same problem with my XPS 1645 keyboard backlight.
I also tried everything to fix this issue :

- Fn + right arrow key

- Reinstalling Dell Quickset (which at least succeeded at switching on my trackpad light)

- Switching parameters in the Windows mobility center

 

If anyone finds a solution, I'm very interested.
Thank you for your help 😉

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Re: Backlight Keyboard no longer works. Studio XPS 1645

This worked for Dell 1645.  Thanks for the post.  I am disappointed that the Dell Documentation does not have this turn-on/off key sequence easily & prominently displayed.  I wasted a lot of time looking for this key and thanks to you I find the answer on a non- Dell web page.

pfrench

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cmajewsk
2 Iron

Re: Backlight Keyboard no longer works. Studio XPS 1645

I had this issues as well.  The keyboard back-light was turned off - thanks for the idea, and the fix.

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