|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.