Will a 9v battery power a monitor?

I wasnt sure where to ask this but i hope you will guys help. So I found an old monitor but i cant find the power cable so i was thinking about powering it with a 9v battery. I dont wanna break it or something because i cant afford a monitor so can to little voltage break it? I mean its old so i dont know what to expect. Btw the battery is 1.5 A but the monitor need 12V and 3 A