2011-12-14, 11:02 PM
I had this problem with my VAIO as well but i manged to fix it by reinstalling the OS. Turns out my vaio had crashed multiple times (due to low battery and charger not fitting 100%). The crashing resulted in the computer attempting to boot up but would instead sit at a black screen without doing anything. I don't know if yours is doing the same thing but the problem sounds similar. Can you get to the Ms-Dos boot mode? or the Sony recovery system at all (Click F10 during bootup)?