White screen startup chime

I have a macbook pro a1260, about a month ago i went to turn it on and the screen was white. I googled and googled trying to find out exactly what the problem was. Some places would say its the logic board, others a network issue, while still others say its a hardware issue. I've went through and done just about everything suggested by all three of these.

These are some of the things I've done.

-plug the "system install" pendrive

-reset the SMC

-reset the PRAM

-hold down Option key

-hold down C key (for rEFIt)

-battery powered, magsafe powered

-removed hardware from board 1 at a time

-taking screen apart and checking connection of all cables

-Replaced cables for video

-replaced charger(Although that was pointless and expensive since mine showed the green light when charging and my battery does charge.)

Now, when i boot up holding down the option key, I do get my cursor back, but nothing else. Screen is still white and i get my bootup chime. When I remove the Hard Drive there is no change in it whatsoever. I do not have the means to try target mode as this is my first (and last) apple computer and the cable and all that would just cost me too much. As the host computer would have to meet these requirements:

-Built-in FireWire port or a FireWire port on a PC card

-FireWire 2.3.3 or later

-Mac OS 8.6 or later

I just dont understand how an apple product could have so many problems. I've always been satisfied with my IPhone, IPod, and IPad. Never had a problem out of one of them. Guess I'll have to revert back to my windows pc after all.