Original post by: Burney Poh ,
The same issue happened to my MackBook Pro 2011 Fixed: Power up, No startup sound, Solid power light, Black screen, Fan spinning, dvd drive and hard disk running, Perform Option Command P R to reset Parameter RAM then shut down by hold on to Power Button. Then Power Up and immediately SHIFT CONTROL OPTION COMMAND Power button to reset SMC . Power down again. The put any CD into the CD drive and power up with holding the eject power. The CD make so noise and the the start up screen and boot up sound heard, The MBP17 2011 finally power up.