Hi folks Bought a Acer G277HU as a replacement second monitor, I'm using DVI cable connection on my 2008 Mac pro with a NVIDIA GeForce GTX 285 1024 MB card. Monitor is on (Blue LED power light) and showing up in colour sync profile but no picture, i get Acer startup stuff but then is just blank. The controls don't show up either when pressed. could it be the card? as my samsung Syncmaster 23" is working fine. Thanks for any help. Ronny.