How do I get to the BIOS setup

Providing info about the lappy would be helpful.

Does the boot up screen tell you anything?

Here's an old list that might help for an old pc:

Try some of these key combinations on startup;
Press del during boot= (AMI, Award).
Press Esc during boot= Toshiba.
Press F1 during boot= (Toshiba; Phoenix; Late model PS/1 Value Point and 330s).
Press F2 during boot = (NEC).
Press F10 when square in top RH corner of screen= (Compaq).
Press Ins during boot=IBM PS/2 with reference partition.
Shift Ctrl Alt + Num Pad del= - Olivetti PC Pro.
Ctrl Alt ? =some PS/2s, such as 75 and 90.
Ctrl-Esc = Misc Puters
Ctrl Ins= some PS/2s when pointer at top right of screen.
Press reset twice= some Dells.
Ctrl Alt Enter= Dell.
Ctrl Alt Esc=AST Advantage, Award, Tandon.
Ctrl Alt + =Misc Puters
Ctrl Alt S= Phoenix.
Ctrl Alt Ins= (Zenith, Phoenix)
Ctrl S =(Phoenix).