Toshiba Z20t-B2111W8 Portege Z20-B Series Windows 8.1 User's Guide (PT15AU/PT1 - Page 135
Keyboard problems, Display problems, HINT: Pressing
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135 If Something Goes Wrong Keyboard problems Keyboard problems You have connected an external keyboard and the operating system displays one or more keyboard error messages. You may need to update your keyboard driver. Refer to the documentation that came with the keyboard or to the keyboard manufacturer's Web site. The keyboard you connected may be defective or incompatible with the device. Try using a different make of keyboard. Display problems Here are some typical display problems and their solutions: The screen is blank. Display Auto Off may have gone into effect. Press any key to activate the screen. If you are using the built-in screen, make sure the display priority is not set for an external monitor. To do this, press FN + F5. If this does not correct the problem, press FN + F5 again to return the display priority to its previous setting. HINT: Pressing the FN + F5 key several times will advance you through the display options. If you are using an external monitor: ❖ Check that the monitor is turned on. ❖ Check that the monitor's power cord/cable is firmly plugged into a working power outlet. ❖ Check that the cable connecting the external monitor to the device is firmly attached. ❖ Try adjusting the contrast and brightness controls on the external monitor. ❖ Press FN + F5 to make sure the display priority is not set for the built-in screen.