Question about Panasonic Toughbook CF-27 Notebook

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Cf27 screen has lines in it after a few minutes, color fades, laptop is in docking station in squad car. does not do this at home.

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Re: cf27

Its possible you have a short in the docking station, be careful it could damage the computer.

Posted on Dec 31, 2007

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How can i update dell dock?

A docking station is an extension or addition of ports for a laptop computer. Once the portable computer is docked, you can access the docking station's ports, such as PS/2 or USB 2.0 ports, through your computer. Some docking stations have monitors that you can connect your computer to, placing your video on an external screen so you can turn off your computer's monitor and conserve some of your computer's energy. All Dell docking stations will have the same general troubleshooting steps.

Plug your laptop's power adapter into the docking station and dock your laptop onto/into the docking station. If there is no power going to your laptop from the docking station but it works when the power adapter is plugged into the wall, the docking station is bad and needs to be replaced. Plug your power adapter into the docking station and dock your laptop onto/into the docking station. If power goes on but your computer doesn't recognizes accessories such as a USB mouse--plugged into the docking station, try a different port on the station. If it works in a different port, the previous USB port is burned out. Plug your power adapter into the docking station and dock your laptop onto/into the docking station. If power is going through the docking station but no accessories are being recognized, you might have a corrupted docking profile. Undock the computer and dock it again once it has fully started up to reset the docking profile. Plug your power adapter into the docking station and dock your laptop onto/into the docking station. If you have an external monitor and it is not working, completely close the lid on the laptop so the image will move to the external monitor. Plug your power adapter into the docking station and dock your laptop onto/into the docking station. If power is going through the docking station but no accessories are being recognized and resetting the docking profile fails, update all drivers through Dell's support website and then re-dock the computer. Some of the software that runs the hardware may have become corrupted. Hope this helps


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1 Answer

My screen goes dark when I use my laptop. I have a docking station with monitor and the machine works fine. However when I undock or start up with just the laptop the screen goes black. I can still see...

Hi wilhejl,

I see that you are experiencing a video issue with you back light on this case,
you mentioned when docked on your docking station you see the video on you monitor but when undocked you get a black LCD screen and see shadows of what is on the LCD screen.

this is a back light issue that you are experiencing.

We can try and check some settings regarding this concern and se if there is anything we can do to correct what you are experiencing with your laptop

As soon as you turn your Laptop on keep on tapping F1 to will bring you to the BIOS screen if the BIOS shows up on you LCD screen without going black then most probably yo may need to change some settings in windows regarding the the LCD and power options.

  • Try docking back into your docking station and inside windows go to power options, and set your system power options to balanced.
  • On your Desktop right click anywhere on an open space to get the menu list click on personalize then click on display then click on advance settings, look for screen refresh rate change it to 59Hrtz then undock from your docking station and try booting into windows without using the docking station to check if the video will show on the LCD again on this issue.
I hope that this can help regarding your case,

Have a nice day.

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Try removing the laptop, unlug the power to the dock and wait a few minutes, then connect the power now put your laptop back on the dock.
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Have a good day and good luck.

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The LCD screen is at fault. If your lappy is in warranty try replacing it. It would cost araound $50-$80

Thank you!

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this thing happened in my laptop also i got green screen fully
then when i hit it behind the screen it was gone but comes many times then again i would hit
later on the screen was completly lost then had to replace the screen
yous is a starting period so go to a nearby computer service and fix the screen

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Bearing in mind you mention the viability of cost, I'm thinking your laptop is out of warranty. This does sound like a pretty major problem, one which HP need to look at. You can always approach them for a quote first, with a min/max price, before you decide whether to go ahead or not.

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