Can't access BIOS on Dell laptop because keypad isn't working

I have a dell vostro 1500 needing a fresh install of xpi got from a friend who had for some reason taken it all the way apart and when he put it back together the screen stayed black when you turned it on. i fixed that, but the keyboard will not work at all so i can't access the bios to change boot order. I have taken back apart and everything seems intact. I am assuming a usb keyboard will not kick on in time to let me access it either. . . so i am stuck
 
"I am assuming a usb keyboard will not kick on in time to let me access it either"...

Try this before you say you are stuck... Keyboards are cheap. Check them out on EBay
 
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