My monitor has done it twice. For a while back and not so long ago.
One day my monitor just stopped working. I tried everything I could think off to see if I could get it to work, or to make sure that it wa the monitor that was broken. I deemed the monitor "probably dead". Then I just borrowed my brother's monitor, as his computer wasn't working anyways. One week later, my brother wants his monitor back, as he got the part to make his computer work. I gave him the monitor, and for the lulz, I plugged in my 'dead' monitor, to see if it wished to pull off a Jesus move. And it did. I still have no idea why that worked.
Not so long ago, the text on my monitor got blurry. So I reconnected the cable. Still blury. Then I just went for my brother's monitor, since he wasn't home, to see if it was blurry then. No blurrines at all. Then I quickly switched monitors again. My monitor still made it blurry. So just for checking, I connected my monitor to my brothers computer. And then my monitor wasn't making a blur out of that text. Confused, I just kept using my brother's monitor until he came home, and then switched. When my monitor was conected to my computer, the text wasn't blurry.
My monitor is a troll