We'll need more info than that.
Please list your full system's specs like so:
CPU:
Motherboard:
Ram:
SSD/HDD:
GPU:
PSU:
Chassis:
If you've tried other hardware, please list them as well and also state everything you've tried so we don't repeat what hasn't worked for you.
Thank you for the quick reply.
CPU: Ryzen 5 2600
MOBO: ASUS Prime B450M-A
RAM: Corsair Vengeance LPX 2x4GB
HDD: 1TB WD Blue Mainstream 3.5”
GPU: Radeon RX580 Nitro + 8GB
PSU: Corsair CX550w ATX
Chassis: Trust GTX 1110 ATX mid tower
I tried dropping down to one RAM, tried with both singularly. Tried with a non-branded stock RAM (8GB) from my prebuilt. Also tried my NVIDIA GTX 1050Ti but same outcome. Tried the RAM in my prebuilt and it worked fine, both sticks. Can’t try the 580 GPU as my prebuilt doesn’t have enough power cables to run it. I do appear to be having issues with the front connector panel switches, as they kind of appear to be labelled in the wrong direction in my MOBO manual than when I look directly at them, but would that give me the problem of no feed to my monitor?