my display on my computer turned off but pc and monitor are on

[MrOrangeGoggles]

Yesterday I was playing Hitman on my pc and the displayon my monitor says no signal but my pc and monitor are still on pls help
These are my specs if you need it
Amd fx 4130
Asus m5a78lm matx mobo
Msi R7 260x oc
1 tb of hard drive
Cx430m power supply

Pls help me cause this is the only website that can help me

 

[z0rr0w]

did you check cables?