when i boot up it comes up with the superviser screen

i type in desktop but it replies 'error in modual area'

can any one help me?

When you turn it on, hold down 'R' to reset the CMOS.

Hello, the other day i was in my loft and found my old Acorn A3000 when i turn it on it displays:

RISC OS 1024K

Supervisor

*

i have tried the hold 'r' and turn it on but no success
if anyone has any ideas on how to get back to the old desktop screen please email me aaron.regan@googlemail.com