That tells me the PC has issues. No make, model, age, story so for now, try the usual. Unplug everything from the desktop, press and hold the power button for 60 seconds, release and apply power (nothing else.) Any beeps? No? You are looking at the bad part.
Hi, my monitor won't display anything on my computer. I have unplugged and restarted everything. I can't fix what I can't see. Monitor shows "no signal". Happened while computer was on. already. No "beeps" at startup. Not even sure if it is fully starting. Monitor works fine when plugged into another device.