2 Replies Latest reply: Jan 8, 2013 2:03 AM by antoon de grom
antoon de grom Level 1 Level 1 (0 points)

I have a new iMac for 2 moths.

 

This morning sudenly my Mac shows a horizontal dotted line (1 pixel), at the bottom of the screen, at 15% from the bottom.

Below that line, the image starts to flicker now and then.

There is also a vertical yellow line accroos the screen (1 pixel)

 

The flickering is very anoying, what can I do?