How to access BIOS PACKARD BELL ENTG71BM

This thread implies that holding the shift key during boot will present you with USB boot options:

http://ubuntuforums.org/showthread.php?t=2189855

It turns out that Acer's 'black screen of death' happens even when there's a minor issue such as a blown capacitor on the main-board. First thing I did when the black screen was to try and recover the BIOS as suggested by many people, however i was never able to make the ultrabook to read the USB drive. In this situation, i took it to a friend who has some knowledge on motherboard electronics and bingo - armed with a multi-meter he found out that there was a blown capacitor. He used a heat gun to remove the bad capacitor and replaced it with a good one. The moment i opened the ultrabook it started working like it did not have any problem. There it is now - it was not a BIOS issue but a blown capacitor in my case!