Specs; Model Name: Mac Pro Model Identifier: MacPro2,1 Processor Name: Quad-Core Intel Xeon Processor Speed: 3 GHz Number Of Processors: 2 Total Number Of Cores: 8 L2 Cache (per processor): 8 MB Memory: 5 GB Bus Speed: 1.33 GHz Boot ROM Version: MP21.007F.B06 Running X 10.5.8 Symptoms; Upon booting first discrepency comes with the white/grey apple logo splash screen. There is a pink jagged line through the apple logo. Following that we get blue screen. I run dual 22" monitors, the second screen flashes blue for a second then goes black. Primary screen stays blue.....end of story. Possible cures; Have tried rebooting from system disc, resetting PRAM, resetting of non-vital systems. Any ideas/experiences much appreciated.