bios problem

[dontpushmybuttns]

hi everyone newb here , i have a dell 330 and neewd to uninstal my xp so i can re install it, can anyone tell me what button to use?
i ahve tried f12 f11 f8 f2,and cannot get in, it said keybord failure ,i switched ,and same thing
any herl would be nice, i have dont it b4 3 times in 3 years to refresh it i just cant seem to get in it

 

[Aastii]

tried your delete key (usually del, the one on the num pad)

If it is saying keyboardfailure, use a diffferent keybaord or try a different socket (if it is USB)