i put a new mother board ,discdrive,harddrive,floppydrive,and now i can't get my cpu to read my monitor it want find it trying to find out why?and also put new graphic card in ...

What happens when you power on?

Does the computer appear to be running?

Any drive lights? Keyboard lights? Does the monitor LED go to green then switch to orange/amber? Do you get a No Signal message?

Is this a DVI connection or VGA?

etc.