Vaio can't switch to external LCD on startup

January 6, 2011 at 06:50:45
Specs: N/A

I have a Sony Vaio with broken LCD. Tried to install Ubuntu 9.10 cause Vista had problem but after the installation the system can not detect hard drive. I think that it is essential to switch to an external monitor but i can't, cause the laptop switches to external only after OS startup. can anyone help? Thanks!

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#1
January 6, 2011 at 07:50:34

... try tapping either <F2> or <F3> <key> @ bootup to [enter] bios

... perhaps alter a setting to vga mode(?) save settings on exit of bios

... there may be some Function <keys> to [press]

... to toggle between laptop screen and monitor eg. <Fn> + <F5> <keys>

... it may even have a monitor icon on the <key> (?) top row

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#2
January 6, 2011 at 07:56:56

Thanks man but it is impossible to run the bios because i do not have a screen. i can't see! When i push the Fn+F7 key it switches screens but only if i have an OS running.not before the windows start up for example....

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#3
January 6, 2011 at 08:05:14

... it should load into bios + toggle with monitor attached!

... see anything tapping <F8> <key> @ bootup?

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Related Solutions

#4
January 6, 2011 at 08:15:09

I'll try man and I'll tell you. thanks!

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#5
January 6, 2011 at 08:39:26

Most laptops have a key combo that you can press to toggle the display to external video only / sometimes both / built in display video only - see the Owner's or User's manual for the model.

NOTE that the operating system does NOT have to be already loaded to use that feature - you're using the basic VGA support that's built into the bios and the video adapter while booting , before the operating system loads.


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#6
January 8, 2011 at 10:01:56

I tried everything you said but nothing happens...is it possible to connect an external LCD instead of the laptop's main screen?

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#7
January 8, 2011 at 10:43:37

... you may have to hold-in the <Fn> <key> first then tap <F7>

... the external monitor does turn on from its own power source of course(?)


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#8
January 8, 2011 at 13:25:56

See response 5 !

It doesn't matter whether the external monitor you connect is a CRT or a LCD monitor.

If you press the proper keys stated in the manual and you still get no video on the external monitor, that indicates your video adapter is not working ! In most cases the video adapter is built into the laptop's mboard - in that case you must replace the mboard !

How did the built in LCD display "get broken" ?
Did you drop the laptop ? Did you spill liquid on it ?

"Tried to install Ubuntu 9.10 cause Vista had problem but after the installation the system can not detect hard drive. I think that it is essential to switch to an external monitor....."

That problem has nothing to do with your video problem !


The mboard's bios Setup must detect the hard drive. Go into the bios and take a look.

If your hard drive is SATA, if the operating sysytem CD or DVD you're using does NOT have the drivers for the mboard's SATA controller built in, the CD or DVD contents will not be able to detect any SATA drive.

In that case, you need to.......

- the easiest choice - works with any operating system - go into the mboard's bios Setup and change the SATA controller mode from SATA or AHCI mode to an IDE compatible mode, save bios settings.
Then the operating system CD or DVD will be able to detect the SATA drive as an IDE compatible drive. After the SATA controller drivers for the mboard have been installed in the operating system, then you can go into the mboard's bios Setup and change the SATA controller mode back to SATA or AHCI mode, save bios settings.

- or - provide drivers for the mboard's SATA controller while installing the operating system.
I have no idea how you do that for Unbuntu or Linux.
For Windows 2000 or XP you must press F6 very early while loading files from the CD and provide those drivers on a floppy disk in a regular floppy drive, which you probably don't have. Their initial files loaded from their CDs cannot recognize drivers being on most models of USB floppy drives, disks in optical drive or in USB optical drives, USB flash drives, on other hard drives or on other hard drive partitions on the same drive.
For Vista and Windows 7, similar applies, except the initial files loaded from the DVD will recognize the driver files if they're on more sources, such as on a USB flash drive.

- or - you make yourself a bootable "slipstreamed" CD or DVD that has the SATA controller drivers you need for the mboard integrated into the operating system contents, and use that rather than the original CD or DVD to install the operating system.


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#9
July 10, 2011 at 10:46:28

False lead!

Even though the laptop's display is broken, if you get video on the external LCD monitor AFTER windows boots up, then there's no "broken video card". The only problem here is with the crappy BIOS Sony puts on the Vaio VGN-TX770p that apparently never conceived that anyone would ever need to switch to an external monitor BEFORE the OS boots up (that is, to enter the BIOS).

Its a Catch-22 dumb design: You have a problem with your main display? Go the BIOS and change it to external. Oh, right, you cannot set the BIOS for an external monitor, since you already needed to have a working main display in order to look up the BIOS option and change it to an external monitor."


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#10
July 10, 2011 at 11:58:06

Napi

We HAVE seen, rarely, that the video adapter CAN be damaged such that the basic VGA support does NOT work but the enhanced support DOES, when the specific drivers for the video adapter have been loaded, when you boot normally. In that case, you have no video in Safe mode or Enable VGA mode either .

Also, rarely but more commonly, we HAVE seen that the video adapter CAN be damaged such the the basic VGA support works but the enhanced support does NOT work properly when the specific drivers for the video have been loaded. In that case, your basic VGA video in Safe mode or Enable VGA mode works fine .


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