Question Displays turn black after login


Oct 3, 2018
After I login and everything that launches on startup begins to launch my screens turns black. I can still see my mouse cursor and if I press ctrl+ left shift+ esc my task manager still pops up. This happened after I plugged in a new used graphics card to confirm it worked for a friend and then swapped back in my original graphics card. I will try to reply to any questions as soon as possible. Thanks for any forms of help!

My pc setup:
Video/ graphic's card (GPU): Asus GeForce GTX 1080 8 GB ROG STRIX Video Card
Processor (CPU): Intel Core i7-8700K 3.7 GHz 6-Core Processor
Motherboard: Gigabyte Z370 AORUS Gaming 7 (rev. 1.0) ATX LGA1151 Motherboard
Processor cooler: Corsair H150i PRO 47.3 CFM Liquid CPU Cooler
Memory (RAM): Corsair Vengeance RGB Pro 32 GB (4 x 8 GB) DDR4-3200 Memory
Power supply (PSU): EVGA SuperNOVA G2 650 W 80+ Gold Certified Fully Modular ATX Power Supply
Case: Cougar PANZER EVO RGB ATX Full Tower Case
HDD: Toshiba X300 4 TB 3.5" 7200RPM Internal Hard Drive
SSD: Western Digital Blue 250 GB M.2-2280 Solid State Drive
Operating system: Microsoft Windows 10 Home OEM 64-bit

Tested graphics card:
MSI Radeon RX 570 Armor 8GB