I have a Macbook Pro (Early 2008 edition, last one before the unibody update) which will not start. Upon pressing the power button the unit does make the noise of the DVD drive initializing and has a solid white power light on the front of the unit, but no display picture, no typical "bongggg" startup noise. I have followed all the directions in http://support.apple.com/kb/TS1365?viewlocale=en_US
to no avail. The unit is now running with one piece of the stock RAM. Any advice would be greatly appreciated.