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By jpalberto3 ·
Hi, Can anybody please help me. I just bought a sony vaio VGN s360 notebook a month ago. (fn)F3 and (fn)F4 are volume down and volume up respectively. but now i noticed they dont work anymore as well as(fn)F5 and (fn)F6 which are brightness controls.I hesitate doing a system restore for i may loose 10 applications i have installed. Thank You.

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by Oz_Media In reply to VOLUME and BRIGHTNESS con ...

My IBM has had a similar issue with the Function keys but updating all my software refreshed it all.

Here is teh software download page for the VAIO VGN-S360, GUESSED at the exact model . But the sam page will allow you to look up YOUR exact model if need be.

Update everything, Chipset, BIOS, Video Drivers etc.

This will get the latest system updates in, which will usually overwrite any damaged or deleted files.

Another thing you can do is use the System File Checker utility, it will scan the system and replace any damaged or releted files too.

Assuming this is XP of course: Just go to the Run box on the Start Menu and type in:
sfc /scannow

If your operating system, is stored on the hard drive, it will extract any needed files from there. If it was installed from a CD, you should put the CD in teh drive so it can find teh files there.

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by In reply to VOLUME and BRIGHTNESS con ...


Those Fn + function key features are manipulating the hardware. They are not part of MS Windows. Reinstalling Windows will not have any effect on their operation.

I suggest you contact Sony for assistance with this. There is likely a hardware or firmware problem.

Let me know what the problem turned out to be. Thanks.

-----Steve Jackson

Software Corporation (Softcorp)
Advanced pro bono tools and utilities free for personal use

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by HAL 9000 Moderator In reply to VOLUME and BRIGHTNESS con ...

With most of these notebooks just reinstalling the keyboard drivers will cure your problem. They can become corrupted when you install some forms of software on the unit.

There is one other option that can adversely affect them and that is if you have been using an external keyboard and switched on the Number Lock or Scroll Lock this can cause the original keyboard to do all sorts of strange things so if that is the case the easy answer is to refit the external keyboard and just turn off the functions.

I hope that was of some help lets know how you get on.


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by willcomp In reply to VOLUME and BRIGHTNESS con ...

The answer probably lies in Steve's and Colin's responses.

Yes, it is a hardware function, but key scan codes can be remapped by software. Re-installing Windows may fix the problem by removing whatever software or Windows setting that modified the scan codes.

Try booting from a bootable CD and see if brightness controls then work. If so, it is definitely a software issue.


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by andres_dz In reply to VOLUME and BRIGHTNESS con ...

what you need to do is visit the Sony web site and get the Hotkey utility , try to update always from the manufacture then from Micorosoft. This driver will fix and enable any FN key combination


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by kewlice33 In reply to VOLUME and BRIGHTNESS con ...

To be specific, download the Sony? Notebook Utilities for Sony VGN-S360 at this link:

Filename: SOOOTH-31700000-US.EXE
Version: 1.0
Size: 10.7 MB

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by kewlice33 In reply to

You can also contact Sony at (88 476-6972 or visit their site at

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