Can my pc run Black Ops 3?

Yes, but at low to medium settings. Better not to try split screen settings, your laptop graphics is not powerful enough to handle that in games.
 

hi, give this a try... http://steamcommunity.com/sharedfiles/filedetails/?id=552424982
see also here: https://www.techwalla.com/articles/split-screen-onto-two-monitors
https://www.reddit.com/r/blackops3/comments/3rtufl/dual_monitor_split_screen/
good luck :)