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turn on monitor first with it plugged into laptop via vga cable.
THEN turn on laptop and start it from OFF .
it has to detect the monitor is plugged in to laptop before it will offer video selection via FN F8 key

Hi Harry,

My name is Pradeep and I work for Dell's Social Media Team.
Please boot the system to BIOS and check video settings under Onboard devices.
Please install the video driver using the link: http://lt.dell.com/lt/lt.aspx?CID=285905&LID=5550770&DGC=SM&DGSeg=DHS&RED=301&DURL=http://www.dell.com/support/home/us/en/19/product-support/product/latitude-d620/drivers
Please try FN+F8 option to extend the video to external monitor.
Please update chipset driver under Application using the same link. If this doesn't work, then boot to BIOS and try FN+F8, if it works then it is issue with driver or settings.
If the screen doesn't extend in BIOS, then it might be issue with port.
Please connect to external monitor through HDMI cable and let us know the status.

Pradeep Lokesh
Social Media and Community Professional
Order Status: http://del.ly/61822hij
Download Drivers: http://del.ly/61832hid

check physical connection and once connected tap press \and hold fn key and press on f8

Disconnect all cables and reboot your computer.
Turn off your hdmi TV as well.
When computer is already on, connect the VGA/HDMI cable to your computer and the other end to the TV.
Turn TV on then press Fn+F8 ONLY ONCE.

Seems that you have a loose LCD screen cable connection. You will need to disassemble the laptop & make sure the LCD screen cable connection is tight.
Please check this link for more details:
http://www.laptopparts101.com/lcd-screen-video-cable/

you need to go to te control pannel and go to display settings then manually select the external monitor then hit apply it will open on your projector

you hold FN and tap f8, and it SHOULD switch. You can try using any external monitor to see if it works. If another monitor works, it is not the machine, but the projector. you can also check the bios to see if the vga port is enabled, or, check your video driver to ensure it is enabled.

Once the projector is connected to your laptop, and both devices are powered on, press the Fn + F8 keys on your laptop to toggle your screen to the projector.

Try fn + f8, then wait and see if the projector detects the port (15 seconds or so) if no change, try Fn+F8 a 2nd time

Typical issue is the second monitor resolution got set too high for the monitor to generate a picture. Go to display settings and adjust the resolution down to see if it comes back.