Toshiba Laptop Function Keys not working

Hi: I have a Toshiba Satellite C55-A laptop. It is a year old, and it came with Windows 7 Home Premium Service Pack 1. I recently upgraded to Windows 10, but then after a week I decided to downgrade back to Windows 7 for personal reasons. My function keys (like the brightness up and down, volume up and down, mute, wifi, play music etc.) worked before and worked in Windows 10, but for some reason when I downgraded back to Windows 7 most of them have stopped working properly. When I press the keys what I get is the function of the actuall F1-12 key (e.g. full screen, search, refresh) and not the brightness, volume etc. The special functions only works when I have to press the FN key at the same time, which is kind of troublesome. I also no longer get the useful notification in the corner of my screen when I press the buttons of, for example, what level (4/8 for example) of brightness I'm at or what level of volume I'm at. Solutions I have tried / checked:-I have checked in All Programs > Toshiba > Tools and Utilities > HWSetup > Keyboard, and the setting for Function Keys mode is correctly set to "Special function mode". But it still doesn't work.-I've installed Toshiba Value Added Package.-Function Keys is enabled in Flash Cards. Is there anyway I can get them back to a working state, because they were really useful before, without having to factory reset my laptop? Thanks, Tiffany

You may want to download and install the System Driver from Toshiba support website

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Take a look here:
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http://aps2.toshiba-tro.de/kb0/TSB2903E00000R01.htm
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Welcome to Lenovo Community!
As per the query we understood that you are facing issue with keyboard function keys not working on your ThinkPad E545.
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When I could no longer adjust my brightness is when I noticed that my function keys were not working. Is there any other way to adjust the brightness on my laptop besides the function keys? If so I have not figured it out.
This question was solved.
View Solution.

Hi:
Make sure you have installed the Intel chipset driver and reboot.
http://h10025.www1.hp.com/ewfrf/wc/softwareDownloadIndex?softwareitem=ob-76994-2&cc=us&dlc=en&lc=en&...
Make sure you have installed the NVidia graphics driver and reboot.
http://h10025.www1.hp.com/ewfrf/wc/softwareDownloadIndex?softwareitem=ob-100095-3&cc=us&dlc=en&lc=en...
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http://h10025.www1.hp.com/ewfrf/wc/softwareDownloadIndex?softwareitem=ob-74407-1&cc=us&dlc=en&lc=en&...

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Hey guys,
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In case you want to use the F1-F12 functions without the pressing FN button, the function key mode should be enabled (should be set to special function mode)
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https://aps2.toshiba-tro.de/kb0/HTD2503B90001R01.htm
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Hi! Night shift here! You can find the full model number on the bottom of your laptop. Jerry might not log on again tonight!
Dokie!
I Love my Satellite L775D-S7222 Laptop. Some days you're the windshield, Some days you're the bug. The Computer world is crazy. If you have answers to computer problems, pass them forward.
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I am an HP employee.
Make it easier for other people to find solutions, by marking my answer “Accept as Solution” if it solves your problem.

Toshiba Laptop Function Keys not working

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