Question PC won't display anything, but everything is on

[readie]

I encountered the strangest/most infuriating thing today. When I turn my PC on, nothing displays. I had this issue when I built my PC, but I fixed it. The problem back then was that my Mobo wasn't compatible with my RAM. I fixed this by using only one stick of the two that I had, but today it decided it didn't want to work anymore. I changed nothing on my system, and it was working fine this morning. I doubt it's my GPU as my monitor still turns on (gets off of standby) when I plug my HDMI cord in, so my monitor is clearly still recognising my GPU is there. Everything else still turns on also, so I don't think my Mobo is dead. The only thing I can think of is that my RAM isn't compatible at ALL now. Please help!

 

[DSzymborski]

It would be easier if we knew more about your PC other than the fact that it is a PC. A complete spec list, including a detailed description of your previous fix, is required to give any kind of a useful answer.

 

[readie]

It would be easier if we knew more about your PC other than the fact that it is a PC. A complete spec list, including a detailed description of your previous fix, is required to give any kind of a useful answer.

Sorry, I'm new to this kind of stuff. My specs are as follows:

CPU - Intel i5 9600k
GPU - AMD Radeon RX 580 Armor OC 8gb
RAM - 1 stick of Corsair Vengeance RGB Pro 3600mhz 8gb
Mobo - ASRock B365 Pro4
PSU - Cooler Master MWE White 650W
HDD - Seagate Barracuda 1TB