External monitor no longer recognised properly

[Dave Logan]

Hi

I have a Sony Vaio laptop running XP, and recently the external monitor
feature has stopped working. If I press Fn+F7, the computer beeps but the
"choose between internal and external monitors" menu isn't displayed any
more. If I right-click the Desktop and select Properties, and then choose
the Settings tab, under Display it lists "1. Sony notebook LCD, 2. Default
monitor" - but in the image above that list, "2" is greyed out, and if I
select "2. Default monitor" from the list and click OK, the laptop doesn't
switch to external display as I'd expect it to.

Is there any way of getting to the bottom of why I can't use an external
monitor any more, and of fixing the problem?

Dave

 

[Dave Logan]

Two more things I should have mentioned:

1) In the Desktop/Properties/Settings tab, if I select "2. Default monitor",
the "use this device as my primary monitor" checkbox is greyed out.

2) In the above tab, if I select "2. Default monitor" and then select
"Extend my Windows desktop onto this monitor", then the desktop *is*
extended and displayed on my external monitor (although my applications are
not displayed on it). This proves that there is no problem with my Video
port - the laptop is still capable of displaying on the external monitor
when it wants to, but it's just being awkward!

Any ideas?

Dave




| Hi
|
| I have a Sony Vaio laptop running XP, and recently the external monitor
| feature has stopped working. If I press Fn+F7, the computer beeps but the
| "choose between internal and external monitors" menu isn't displayed any
| more. If I right-click the Desktop and select Properties, and then choose
| the Settings tab, under Display it lists "1. Sony notebook LCD, 2.
Default
| monitor" - but in the image above that list, "2" is greyed out, and if I
| select "2. Default monitor" from the list and click OK, the laptop doesn't
| switch to external display as I'd expect it to.
|
| Is there any way of getting to the bottom of why I can't use an external
| monitor any more, and of fixing the problem?
|
| Dave
|
|

 

[Dave Logan]

Have I posted in the wrong newsgroup? If so, please could someone suggest a
better newsgroup to post this to?

Thanks

Dave



| Two more things I should have mentioned:
|
| 1) In the Desktop/Properties/Settings tab, if I select "2. Default
monitor",
| the "use this device as my primary monitor" checkbox is greyed out.
|
| 2) In the above tab, if I select "2. Default monitor" and then select
| "Extend my Windows desktop onto this monitor", then the desktop *is*
| extended and displayed on my external monitor (although my applications
are
| not displayed on it). This proves that there is no problem with my Video
| port - the laptop is still capable of displaying on the external monitor
| when it wants to, but it's just being awkward!
|
| Any ideas?
|
| Dave
|
|
|
|
| || Hi
||
|| I have a Sony Vaio laptop running XP, and recently the external monitor
|| feature has stopped working. If I press Fn+F7, the computer beeps but the
|| "choose between internal and external monitors" menu isn't displayed any
|| more. If I right-click the Desktop and select Properties, and then choose
|| the Settings tab, under Display it lists "1. Sony notebook LCD, 2.
| Default
|| monitor" - but in the image above that list, "2" is greyed out, and if I
|| select "2. Default monitor" from the list and click OK, the laptop
doesn't
|| switch to external display as I'd expect it to.
||
|| Is there any way of getting to the bottom of why I can't use an external
|| monitor any more, and of fixing the problem?
||
|| Dave