Projector has a new no signal problem

Is it just the live tv or the laptop in general you are not getting a signal from? Using 15 pin VGA cable correct from laptop to projector?
When booted to projector, on laptop, select "FN" key and either F5, F7 or F8 depending on your laptop. Look for the monitor logo on the F keys. This is telling the computer that you have hooked up an additional external monitor (the projector). Once will send image to projector, twice will display on both, a third time will return to just image on laptop.

switch your computer on first.
switch your projector on second.

check the connector or just insert first the projector then open the laptop..

When the projector displays the background image and the lcd displays the desktop as normal you can drag the open windows to the left or right and display them on the projector. it sounds like this laptop has an internal video card. If you right click on the desktop it might give you options to configure the display settings for the video card. Not sure how you will get to it if it does not show up on the right click menu. Probably through the start menu or in the control panel there should be somewhere to change the settings for the video card. This will no be under the display settings though.

But once you find your dual display options you will be able to change it to make both displays the same

the resolution may have changed. reselect the computer or auto-image.

Click the 2 box on the display settings and put a check mark ano the box that is say to extend the view on to this monitor. Hope this Helps.

switch your lap top first and the projector second----check input is assigned to computer-------press fn key with conjunction of f4 or f5 or f6 or f8.

does your mate's laptop happen to be running XP?

try using a different vga cable. My grade 8 teacher's projector used to do this all the time. try jiggling the connectors

eeek matt. an ally olly, (means garlic mayo in spanish)
never mind, i'll try to help.
first check out all signal in options, are you sure pj is receiving a signal in. use all available input option to check out.
if no joy proceed carefully as follows
power down,openup pj and check by inputs pcb panel.
probably a mini plug has fallen out or a slidein flat cable is not fully plugged in

good luck with the faultfinding