My pc told me to strike f1 or f12 to boot but its not ?

[saidapc]

i have dell dimension 4600c with windows xp when it start up told me to strike f1 or f12 i tried bothh but its not booting can u tell me whats the problem pls??

 

[rgd1101]

what the error message say?

 

[ss202sl]

It sounds like your hard drive is not being recognized. Can you see the hard drive in bios?

 

[saidapc]

No I cant see it? Is it my hard drive? Or if I reinstall windows its maybe working?!