Snedds 0 Newbie Poster

Hi all.
I'm in need of help sorting out a problem and was hoping for some advice. My computer froze on me recently and having restarted the computer it has not been able to log in yet (I'm on a laptop atm). At first a message appeared saying:

Scan Devices, Please Wait.....
Press <Tab> key into user window

Hardware Initiate failed, Please Check Device !!!
The Bios does not be installed. Press <g> to continue

Having done this a new message came up saying:

Verifiying DMI Pool Data.......
Boot from CD:
Disk Boot Failure, Insert System Disk and Press Enter

I'm not sure what disk I am being asked to insert, and was wondering if anyone could give me some tips.

There is also another message that appears before this very quickly before changing screens which says:

Serial_Ch0 Master: No Drive
Serial_Ch1 Master: No Drive

Sorry if all this seems a bit much (or maybe not), I just don't know what to do. Thanks for any help.