Hi Desperate for help Have purchased a Dell Ultrasharp 2312HM I have connected it to my macbook pro 6.2 2010 (Serial Number (system): W8012AZZAGW) via DVI cable and DVI to mini displayport connector at the mac end) I have selected DVI input on the monitor but it just says no computer detected and goes into sleep mode At the mac end of things, the macbooc screen flashes blue momentarily then goes back to normal. In display preference on the mac, clicking the 'Detect displays' button has no effect whatsoever. So in summary, the monitor is on and wired up to mac, but mac isnt detecting it There was an identical issue from someone else back in 2012 and a long thread. I don't believe the person ever got it sorted. ...oh and Dell don't provide any support for this and say it's not compatible, but I can see from numerous threads that others have it working perpectly. 2 things I've thought of...the dell monitor instructions says it comes with a white DVI cable. Mine is black that was in the box. I purchased a fairly cheap DVI to mini displayport adaptor on Ebay. Could this be duff? (the seller only had positive feedback) I'm running OS 10.6.8 Help before I go mental! thank you!