Need BIOS!

I need to get into a computers BIOS to change the boot drive but im having difficulty, the machine in question is a Sony Vaio, im not sure exactly which model but its about a year old.

I dont even get a screen before windows boots saying ‘Hit F12 to enter BIOS’ or anything what happens is:

  1. Turn on computer
  2. Blue logo thing appears
  3. logos appear underneath blue one, (INtel and one other)
  4. Windows Boots

If anyone has some suggestions I will try them out and all,

Thanks in advance!