Got a new OLED monitor, and my PC wouldn’t start anymore. It’d power on - all the lights came on etc. - but nothing would happen and the monitor would go into standby after a few seconds, saying there was no signal. I have a program I use for remote access via my phone, so I’d check that to see if the PC actually made it into Windows or not, but it didn’t. Plus tapping the power button would switch off the PC again instantly, as opposed to having to hold it down like normal, so it seems it didn’t get past stage 1 of bootsville.