Unhappy [Q] Optimus not switching on! (bricked)

I tried to unlock my bootloader using this: http://forum.xda-developers.com/show....php?t=2221102
But once I commanded the oem-reboot, my phone switched of and it never switched back on. I tried to fix it by s/w Upgrade mode, but the phone doesnt even go to s/w upgrade mode even. Please help. I have OMAP4430 drivers manually installed on my pc. Please help.