After upgrading to the Bios 18 mod, I found that it is really hard for me to get into the bios.

I am supposed to press DEL to enter bios. But no matter how many times or how hard I pressed DEL after I saw the prompt, the system booted direct to Vista or gave me a screen that I had to choose start from normal or boot into safe mode, etc.

Is there a trick or other button I should press in order to enter the bios?

Thank you guys