I had one of those, oh no not this! moments this morning when I turned on my monitor and nothing. I could see a notification in the corner, but the rest of the screen was dark grey. Fortunately switching to a different HDMI input seemed to fix the problem. However it is a reminder it is time start looking into replacing my monitor. The fact it also has a DVI connection available, maybe another sign. Now comes the research to find the best monitor at a reasonable price.