No signal to monitors after installing new graphics card.


New member
Hey all, pardon if this is an easy one, but I’ve both googled and looked at as many videos as I could and I still seem to be missing something.

I’ve replaced my graphics card, but ever since I have, my computer monitors won’t receive any  signal. My computer will turn on, the fans will go, but absolutely no go on connecting with the monitors (can turn on and say ‘No signal,’ but that’s it), despite being properly connected by hdmi and the usual  (as far as I know). I’ve tried moving the card to another PCI-e port in my motherboard, but still no changes.

Here are my specs, if helpful. My computer is about 6-7 years old at this point, and I’ve never  updated its main components until this card: 

New graphics card: [SIZE=17pt]Sapphire Radeon Nitro+ RX 580, GDDR5[/SIZE]

[SIZE=22.66666603088379px]Past graphics card: [/SIZE][SIZE=17pt]Radeon HD 7950, 3GB DDR5 @ 384 bits[/SIZE]

motherboard: [SIZE=17pt]Asus P8Z77-V LK[/SIZE]

[SIZE=17pt]power supply: 850watt Raidmax AE, 80+ Gold Certified[/SIZE]

[SIZE=17pt]operating System: Windows 10[/SIZE]

[SIZE=17pt]All help and suggestions is appreciated. Thanks very much, all! ?[/SIZE]