My monitor display won't function

[Noob pcgamer]

Ok first of all I live in the Phil and my pc got destroyed when my brothers smash the cpu by a ball then my pc went wrong and gone black and white like the tv black and white screen then I tried to shut down and leave it. Then the other day I tried to turn on and it went like nothing ever happened it turned on and I go to opera, everything went smoothly but after a couple minutes it went black and white screen again?? Wtf pls help!!!! And I tried to fix but now my monitor won't display but my cpu turns on.

 

[Phillip Corcoran]

Only monochrome instead of colour ------ that's more likely to be a fault inside the monitor, not your PC.
Check the monitor on a different PC or laptop, if it's still monochrome it's definitely a faulty monitor.