The Neoware CA5 has a standard Phoenix Award BIOS - hit the DEL key on power-up to get into the setup screens.
The boot options cover:
The BIOS may be password protected. If the backup battery is flat you will find that it is password protected. The default password is DOGBITES. (At least it worked for me!).
If you have a NeoLinux version (eg BE-02-BA) the information following may be useful:
From here you can explore the filing system.
Running the passwd command will let you change the root (administrator) password.