I have a Lenovo desktop with a Lenovo monitor. When you turn on the PC all you get on the monitor is power saving mode. The Lenovo monitor works fine attached to another PC. I used another monitor, an HP, connected to the Lenovo PC and still have the same issue. Also tried another cable and still have the same issue. I would think the problem is with the PC, but have never seen anything like this. Hope this is the right area to post.