I have a 27” Acer monitor, model number H274HL. It’s about 4 – 5 years old. I recently moved it, and when I put it back and plugged it in, it started doing its screen test, which, to my knowledge, they use to test it at the factory. This cycles through colors, going from red, green, blue, white, black, etc., switching every second or so. This happens when it’s plugged in and not connected to a computer (also happens when connected to a computer).
I have read how to fix this issue for some monitors, when you press/hold certain buttons, but this monitor only has one physical button, the on-off. The other “buttons” that aren’t clickable, only function when it’s connected to something, and the image is being displayed.
Any suggestions on how to fix this? I called Acer and since it’s no longer under warranty, they have no solution for me other than suggesting I take it to Best Buy or Staples …