TonyCarter
VALUED CONTRIBUTOR
If the monitor is displaying the same error on both the PC and the console, with different cables (if I've read it correctly that you've tried HDMI and DP in different ports on the PC and monitor?), then the only common factor is the monitor.I'd need to check but there should be. I only got it four months ago.
So is the issue likely the monitor itself and that's why the pc was beeping?
Edit: Still under warranty.
If you have a Sky/Virgin box, you could try plugging the monitor into that (with the HDMI that's already proven to be working in the Sky/Virgin box) - to confirm it's the monitor.