There could be other issues. I'd wait for your other display so you have a working set of gear or consider a visit to a repair counter.
Why my advice? You left out all the details and many folk just don't know what they have.
My german monitor should arrive in about 2 months but I borrowed an american one from a neighbor for the time being. I cant seem to connect to it using a vga cable (it just says check cable connection). I read about issues with PAL and NTSC but dont quite understand it. Could I have some help?