I do regret the actions that were taken. Some members feel it nessary to make things personal when they clearly were not meant to be. I am sorry that you had to see all of those responces and that they turned into a battle of wits. With that said we continue to assist you with your problem....
I stand by my orginal assesment and instructions of going to www.hp.com and you will have to look on the bottom of the laptop for the exact model number (i.e. I have an HP ZE4900, but my model number is ZE4930us) and look up the service manual. Useing it as a guild, follow the instructions exactally and make sure the cables inside are plugged in properly. However since you did try an outside monitor, it may be your internal onboard video card has gone out.
Sorry I cant be of more assistance....
Thats my 2 cents no one ask for~!