Extern skærm tænder ikk

Gå i skærminstillinger og sæt skærm nr.2 op

i skærminstillinger kan du kun slå den til og fra og lave om på den opløsning men stadig ingen reaktion fra den externe

Og tastekombinationen til skift mellem laptopskærm og ekstern skærm har ingen effekt?

Mener det er Fn+F10...

Fra manualen:
Fn+F10
Toggle output screen
If an external monitor is connected, the monitor on which
the output is to be displayed can be selected with this key
combination.
You can opt to use:
• just the notebook’s LCD screen (LCD)
• both the LCD screen of the notebook and the external digital
DVI-D monitor
• both the LCD screen of the notebook and the external
analogue monitor
• both the external digital DVI-D monitor and the external
analogue monitor
The screen output depends on the display settings in the
ATI-CATALYST® Control Center. Further display toggle settings
are possible in this software. The screen output is limited to a
maximum of two screens at the same time

ja fn+F10 tasten skifter overtil dobbelt skærm kan jeg se i skærminstillinger men den stænder stadigvæk ikke

På den model er der DVI-I + VGA.
Hvilken en bruger du? Og er du sikker på du bruger det rigtige kabel hvis det er DVI-I?

De fleste plejer at tjekke troubleshooting afsnittet i enhver manual, men hvis nu du ikke har:

The external monitor remains blank
MonitorCause ► Troubleshooting
Monitor is switched off. ► Switch the external monitor on.
Power saving has been activated (monitor is
blank).
► Press any key to continue.
Brightness is set to dark. ► Adjust the brightness of the monitor.
Screen output is set to the notebook’s LCD
screen
► Press the key combination Fn + F10
(switch screen output).
The external monitor’s power cable or data
cable is not connected properly.
► Switch off the external monitor and the
notebook.
► Check whether the power cable is plugged
properly into the external monitor and into
the power socket.
► Check whether the data cable is properly
connected to the notebook and the external
monitor (if it is plugged in with a connector).
► Switch on the external monitor and the
notebook.

The external monitor is blank or the image is unstable

SMcorneietonrCause ► Troubleshooting
The wrong external monitor has been selected
or the wrong screen resolution has been set for
the application program.
► Terminate the application program in
Windows by pressing Alt + F4 . If the
fault persists after closing the program,
switch over to the notebook’s internal LCD
screen with Fn + F10 . Change the
following setting:
► Set the screen resolution: Select the
required resolution with Startsymbol –
(Settings) – Control Panel – Appearance and
Personalization – Personalization: Adjust the
screen resolution as required.
► Select monitor: Right-click on the desktop.
Under Personalization – Display Settings
choose monitor 1 or 2 and under Advanced
Settings – Monitor choose the correct monitor.