GDM 5410 doesn't work with laptop

I recently bought it and it used to work for the owner with his desktop. I saw it myself. However, when I try to connect to my laptop, it says "Monitor is fine, but there is no signal from the computer". Can you please direct me to what I should do to make it work? Its kind of urgent for me. Lot of thanks in advance.

[350 byte] By [] at [2007-11-25 22:38:02]
# 1
have you got a 'function F#' or something to direct your video out from your 'laptop display' to the video out port?
at 2007-7-5 14:07:35 > top of Java-index,Sun Hardware,Other Sun Hardware...
# 2
Hi, did you get to solve this problem? I have just bought a similar display and I am having exactly the same problem. I will very much appreciate your help.Thank you in advance
pcolumella at 2007-7-5 14:07:35 > top of Java-index,Sun Hardware,Other Sun Hardware...