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After press fn f4 ,on panasonic cf-y8 , the sound is gone, and i can't get it back.

I need now

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  • Master
  • 571 Answers

Hello,

Press FN + F4 again to activated your sound. You have turned it off.

I hope this helps.

Posted on Dec 07, 2012

  • 2 more comments 
  • aini Dec 07, 2012

    anyway thank you for your answer, but it did not work, I tried many times.

  • aini Dec 07, 2012

    you know, it has sound in the headphone ,but not from the horn of the PC.. So I don't know how to soluve the problem. thanks.

  • Carlo Adrian Canon
    Carlo Adrian Canon Dec 07, 2012

    Check your computer's drivers. Right click on Computer > Device Manager ... Once device manager is open. Check whether you have a question mark or X in the sound card driver. If none. I suggest that you update your sound driver. If no go, Do a system restore. Go to start or pear button > Accessories > System Tools > system restore. Once system restore is open, follow the on-screen instructions and select a date when your sound was still working. Complete the system restore and let your computer restart by itself. Don't touch the power button while it's restarting. Check if sound is fine.

  • aini Dec 09, 2012

    I tried that but still not working , anyway thank you verymuch

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SOURCE: Panasonic CF-51 Toughbook Fn keys don't work at all

The following website contains the needed drivers:

https://eww.pavc.panasonic.co.jp/pc/cgi-bin/itn/toughbook/dl01.cgi

Select your model of CF-51 Toughbook, but you MUST be specific. There are about nine variations of the CF-51 so you must use the right drivers.

Download the hkeyapp, hkeyset, and hotkey files and unpack all files. Use the default unpack locations. If you download the files for a laptop version that is not your own, when you try to run any of these files the computer will tell you that the file is not for your model. If the files successfully unpack then you know you have the right files.

For hkeyset and hkeyapp you must run the set-up applications in the unpacked folders.

Go to Control Panel>System>Hardware>Device Manager and go to Other Devices.

The Hotkeys will appear as an "Unknown Devices" so if there is more than one, right click and choose "Update Driver".

Select "Install driver from specific location" and direct it to "C:\util2\drivers\hotkey" folder.

The computer will find the file and install the driver after which point you must restart the computer.

Hope this helps. It took me a while to figure this stuff out on my own so hope it speeds up somebody else's attempt.

Andrew

Posted on Dec 25, 2008

SOURCE: Fn+F4 on HP laptop does not toggle

s video is output for the tv and its not controlled whith those buttons that you have to configure in the graphics drivers, but usualy the s video on hp and compaq laptops quit working but you have to configure them in the graphics driver

Posted on Jan 02, 2009

  • 44 Answers

SOURCE: i used the fn then f4 button to mute my panasonic cf-y7

When booted into windows just hit fn and f4 again. That should unmute it. You can also look at the toolbar at the bottowm right corner. You should see an icon that looks like a speaker. Right-click and check to see if mute is checked. If so just uncheck it.

Posted on Feb 07, 2010

sunnysolanki
  • 261 Answers

SOURCE: I used the fn F4

Try uninstalling your sound driver then rebooting and reinstalling the driver.OR
Try updating your driver from your resource disk.

Posted on Jan 08, 2011

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1 Answer

Im using Toughbook CF53 and all of a sudden it is not working. I checked all the properties thru control panel and Fn + F4 keys everything looks fine. What could be the problem and can i get help how


I had a similar situation with my CF-53. Oddly, the speakers would not work, but headphones plugged into the port on the front of the laptop would. Could you verify that you get audio through the headphone port, please?

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me also having the same problem.. no audio from my toughbook cf-53. it was working fine and dont know all of a sudden how it stopped working. how to fix it???? all Fn + F4 and other things from control did. but nothing seems to be working. please help me to fix it.

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Toughbook CF-53 Speakers won't work


Have you tried rebooting? In the Control Panel, select Sounds, select Speakers as default, remove headphones plug from jack.

May 24, 2013 | Computers & Internet

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I used the fn then f4 button to mute my panasonic cf-y7


When booted into windows just hit fn and f4 again. That should unmute it. You can also look at the toolbar at the bottowm right corner. You should see an icon that looks like a speaker. Right-click and check to see if mute is checked. If so just uncheck it.

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Can't get the sound back


You need to press FN + F5 or F3 one or the other will turn sound back on

Aug 17, 2009 | Panasonic Toughbook CF-51 Notebook

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Which function key allows to switch to tv


Hi there,
You need to press hold the FN key and press the F4 function key once which toggles the display to the External Display source like the television connected along with the LCD of the Notebook.
If the FN and F4 key combination is pressed again, the display will dissappear from the LCD of the Notebook and remain only on the external source.
If the FN and F4 key combination is pressed third time, the display will be back on the LCD of the Notebook and will not remain on the External display source.
Here are these details in other way :
First time pressing FN + F4    ---> Display on LCD and External display
Second time pressing FN + F4 ---> Display not on LCD but on the External Display
Third time pressing FN + F4 ---> Display back on the LCD and not available on External Display (Normal position).
Below are the details of what the Function keys in your DV1000 Notebook work :
fn + f1 Opens Help and Support Center fn + f2 Opens print options window fn + f3 Opens default Internet browser fn + f4 Switches the image among displays fn + f5 Initiates Standby fn + f6 Initiates QuickLock fn + f7 Decreases screen brightness fn + f8 Increases screen brightness fn + f9 Plays, pauses, or resumes an audio CD or DVD fn + f10 Stops an audio CD or DVD fn + f11 Plays the previous track or chapter on an audio CD or DVD fn + f12 Plays the next track or chapter on an audio CD or DVD fn + esc Displays system information.* (*To clear the system information display, press esc.)
Hope this helps...

Oct 11, 2008 | HP Pavilion dv1000 Notebook

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