Davor,
Like Peter said:
"Put the memory back in, boot and type >>> show memory. "
You do not have to boot the machine, just power up. If it is set to autoboot, hit ^P (CTRL-P) to interrupt. The only connections you need are ower and a console (PC with terminal emulator is Ok)
If powering up is no option either, then you have to rely on partnumbers inded.
Willem Grooters
OpenVMS Developer & System Manager