Good evening. I just built my first computer in roughly 10 years. Decided to return back to PC though, CPU is an AMD Ryzen 6300, MB is an MSI B450-A Pro, GPU is a GeForce GTX 2060 SC Ultra, don’t have the PSU info but it’s a 1000W rated unit (overkill but it was free and works so meh). I booted it up for the first time and everything turns on, RBG lights from the fans light up, turn and don’t make any noise, keyboard, mouse, monitor. The thing is, after the initial boot screen the entire screen turns black and has either a flashing (-) or (_) symbol on the top left of the screen. I’ve tried to turn it on with the disk that it came with in the optical drive and nothing happens. The only other computer I have is a MacBook Pro, but everything I bought was new. The only thing that was used was the PSU. Thank you