- Joined
- Aug 7, 2011
- Messages
- 29
- Motherboard
- Gigabyte Z77ud5h
- CPU
- Core i7 3770k
- Graphics
- Geforce 550ti
- Mac
- Classic Mac
- Mobile Phone
What are your connections ?? You can only use two ports at a time... Such as DVI and HDMI. I believe the issue is you have a monitor(s) that have inputs for VGA, HDMI, DVI and you have two or three all plugged in, and Lion decides after startup that it is going to send the signal to your HDMI port, but your on the DVI setting for your monitor. Try changing the monitor port settings to see if one has the desktop. Second cause would be a output that is too great for your monitor. Such as your monitor maxs at 1400X900, but Lion sets it to 1920X1080. Too rich for your Monitor to show, so all you'll see is the last good setting that output correctly. I think the top part is your issue. Good Luck !!