Any monitor that I've had has usually died, or started to, after 5-6 years. The 6 year one started to flicker intermittently ... like, the whole screen would flicker on-off very fast. So fast, that you'd miss if it if you happened to blink. It's hooked up to my Mac mini now, since I rarely use that system actively (but it's on 24/7 running macOS Server and serving iTunes media to the Apple TVs.) Incidentally, my Mac mini is just over 6 years old now, and so far it's lasted longer without issue than the display that's attached to it.