So I just built my first pc today and started it up. All the fans and LED’s in my case turned on and are working fine. however when i plug my hdmi cable from my monitor into my gpu, nothing comes up and it simply says “no signal”. I have no idea what is wrong. Bear in mind I am very new to computers. My specs are as follows - CPU = Ryzen 5 3600, Motherboard = Asrock b450m hdv, GPU = RX 5500, SSD = 240GB M.2 WD Green, HDD = 1TB Seagate Barracuda, RAM = corsair vengeance 8GB DDR4 3000MHz and a EVGA 600 br 80+ PSU