TSD - Trouble Shooting Document

Display Troubleshooting



Notebook display:

  • The screen is dark and does not display anything

    1. Remove any external Monitors and restart the notebook; check afterwards if the internal screen is working properly. If not, contact a service partner for a checkup/repair.
    2. If no external monitor is in use, connect an external monitor to the machine to check if you can see any kind of picture on the external screen.
      Should a picture appear on the external screen, you will have to bring your notebook to a service partner for a checkup/repair.
    3. If even on the external screen no picture is appearing, the machine could have a general hardware malfunction instead of a defective display. Remove the AC adapter and the battery and wait for a few minutes. Replug the AC adapter and power on the device. If the problem still exist please try to perform the steps from the "Boot Up Troubleshooting Guide -> http://aps2.toshiba-tro.de/kb0/TSD57013H000JR01.htm".

  • No backlight or screen is very faint

    1. Try to adjust your screen brightness with the key combinations "Fn-F6" (darker) or "Fn-F7" (brighter).
    2. Check the settings in the Power Options and the available energy saving plans (accessible trough "Start -> Control Panel -> Power Options").
      At the lower end of the Power Options overview screen (Picture A) it's possible to adjust the brightness. The screen brightness can also vary depending on the energy saving plan you are using, you can set up the screen brightness also separatly for each energy saving plan (Picture B)

Picture A                                                                                                                                                               Picture B

  • Screen is distorted or flickers

    1. Connect an external monitor to the notebook if not already done. Check if you can see the Toshiba logo on the external screen or if the external screen is also showing the same behaviour like the internal screen e.g. a flickering or distorted picture.
    2. Try to make a BIOS update if a newer BIOS is available and a driver update if a newer driver is available for your device if you are able to boot up with the external monitor. We recommend to install always the latest drivers and BIOS for your device.
    3. Try to recover your system with the original Toshiba recovery media or Toshiba HDD recovery.

  • Screen is white

    1. Press "Fn+F5" and check if your screen changes. "Fn+F5" changes the screen output, if the output is set to the wrong device the screen can stay just white.

External display:

  • External Screen has no picture

    1. Verify the system is powered on by checking the status LEDs of the machine; ensure the system is not in suspend mode.
    2. Verify the proper function of the external screen by connecting it to another computer. Does the problem persist, the external screen could be probably faulty and needs to be replaced. Try to connect another screen (which was verified working properly) to your machine to check whether the external VGA port is faulty or not.
    3. Check if the display cable from external screen to the computer is properly connected and make sure the connectors are not broken, bend or contaminated. Verify the power cable is mechanically OK and the external screen is correctly powered. Exchange the cables if possible to verify proper function.
    4. Check the external display settings within your operating system.
    5. If the machine is attached to a docking station remove it and connect the display cable directly to the VGA-port of the machine to check if you get a picture. If you get a picture on startup, the docking station is probably faulty and needs to be replaced.

  • External picture is distorted

    1. A distorted picture after machine startup can be a faulty VGA port or a broken cable. Replace the display cable and check all the cables and connections on possible mechanical faults.
      If you notice some broken/bend pins or the cable exchange did not work, there could be probably a serious hardware issue which should be checked by an authorized service partner.
    2. If the screen is working properly after powering up, but gets distorted while starting windows, then reinstall and update the display and chipset drivers to the latest version from the Toshiba driver download page -> http://www.toshiba.eu/innovation/download_drivers_bios.jsp. If the problem persists, the graphics hardware could be probably faulty.
    3. Sometimes incorrect display settings could cause such problems. Check the display properties and lower the screen resolution/color quality to verify if the screen works on these settings.

  • External picture is flickering

    1. Make sure the refresh rate in the "Display settings" is not exceeding the technical limitations of the external screen. Refer to the user manual of the screen to check for the valid refresh rates.
      Try reducing the refresh rate and/or the screen resolution to check if the problem persists on lower settings. Follow the step "External picture is distorted" to check if the hardware is probably malfunctioning.
      Check if the external screen is working properly and replace it in case of a malfunction.
    2. If the problem occurs while attached to a docking station, refer to the "Docking Station Troubleshooting -> http://aps2.toshiba-tro.de/kb0/TSD0702ZL0000R01.htm".

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