Monitor displays Black Screen

[sofiqulsohan2017]

I bought my pc today and it was checked from the store . Pc works perfectly but when i boot my pc monitor stays black everything works perfectly but monitor doesnt show anything.

monitor:http://www.samsung.com/sg/business/business-products/business-monitor/essential/LS19F350HNEXXS

Graphics Card:Gtx1050ti

There is a blue LED on the montior and its working fine
(Sorry for my bad English)

 

[alexoiu]

Make sure you're connecting the monitor to the graphics card, and not motherboard.