Hi everyone, newbie here My iMac is seriously struggling with an external display of mine. It is a 2008 model, so has mini DVI output. I bought an adapter off ebay, connected it to a DVI-D cable which was plugged in to a 2560x1440p Q270 monitor. As soon as I plugged the adapter in to the mac, its kernal panics, and says 'your computer encountered a problem and needs to restart'. I have tried plugging it in during a reboot, and get the exact same problem. The monitor works with my 2006 macbook pro and DVI-D cable, so i'm sure the iMac's graphics card is powerful enough to process the display. Can anyone advise me on where i'm going wrong? Thanks!