There is a blank on the male monitor plug 2nd row 2nd or 3rd in.
I am a little confused with what your are writing.
Are you saying that the PC does not run with the monitor plugged in but will run with the monitor unplugged?
How is the monitor powered? Is it wired through the PC? that is is there a single connection to the mains and the monitor loops out of the PC?
If this is so try running the monitor direct from the mains on a normal 3 pin plug.
You may have a short of some kind in the base unit.