I have a CF-30 toughbook and my screen lights up for about 4 seconds and then goes dark everytime I open the the lid. I can see the screen is still on but not lit up, it will relight if I close the screen and then reopen it. What could be the cause?

Press "F2" on your keyboard when you see the Panasonic logo appear on the screen. You will immediately be prompted to enter your Panasonic Toughbook Cf-29 BIOS password. Type the word "Biostar" into the password prompt. This is your Panasonic Toughbook Cf-29 backdoor BIOS password. Press the "Enter" key to unlock your Panasonic Toughbook Cf-29 BIOS.

Hey Lea,
Try the steps below to see if they will resolve this issue that you are having with your computer. If this does resolve the issue you can email me. My email address is listed below in my sigfile.

1) UNPLUG THE LAPTOP
2) REMOVE THE BATTERY
3) HOLD DOWN THE POWER BUTTON FOR ABOUT 30 SECONDS TO 2 MINUTES
4) THEN PUT THE BATTERY BACK IN
5) START IT UP..

Thank You,
Dell-Jesse L
Dell Social Media and Communities
email [email protected]

On all Panasonic Toughbook Notebooks,
you must get into the BIOS by pressing
the F2 Function key when you turn on the
Toughbook as it is booting. Press F2 repeatedly.
This must be done in the 1-2 seconds before
Windows starts to load. Then you will see
Touchscreen usually on the 2nd page with the
word "Enable". Simply select enable and press
"Enter" and the choice between enable and disable
will appear. Then select "Disable" with the cursor
and then press Enter. Finally you need to
"Save and Exit" the changes in the BIOS.
That is it. Good Luck to you.
Regards,
Richard - Montreal Based
Panasonic Toughbook Authorized Dealer since 1989

You can find all drivers for this model at the following link:
http://www.panasonic.com/business/toughbook/computer-support-search-downloads.asp
Step 1 should be "communication Network"
Step 2 should be "Toughbook CF-30"
Step 3 should not be selected
Step 4 should not be selected
Step 5 should not be selected
Press "Search"
All available NIC drivers for the various models of the CF-30 will then be displayed.

Try to reset hardware first:

1 Disconnect the battery and the charger
2 Let it sit for 1-2 minutes.
3 Press and hold down the power button for 30 seconds.
4 Reconnect battery and charger and try to start by pressing the power button.


If it remains same, restart and tap F8.

If you get an menu, select safe mode and press Enter

See if it able to start in safe mode.

On all Panasonic Toughbooks, any model pre-2008/2009 would have the older LCD screen with an "inverter". The new screens are called LED because there is no inverter.
The inverter is like the "ballast" on a fluorescent tube lighting fixture. The tube could be good but if the ballast is blown then the tube will not "light-up". This is also true of the inverter.
You can also tell when the inverter is about to burn-out when you first start your toughbook in the morning and the screen is initially "red" and then turns white after the unit warms-up for a few minutes.
Good Luck to you.
Regards from Richard, Montreal Based Panasonic Canada Authorized Toughbook Dealer since 1989.

Web Site
http://www.panasonic.co.uk/html/en_GB/220239/index.html#anker_220239
Donot enter model# in first slot.
Enter Computers in second
Enter Toughbook in third
Select CF-27E
Everythink is there, two pages.
Manual isn't much use.