I am stumped with some Mac Pro issues, and hope you guys can help me! This is a mac pro 1,1 - 1gb Ram, 7300gt, 250gb Seagate HD, Tiger 10.4 When booting from cold, (having the system switched off for any period of time), the monitor remains black, with "no input" on the screen. I thought this was a graphics card problem. However after rebooting, (leaving the machine on for 20 minutes or so) the machine boots to a grey apple screen and then loads to a blue screen. The machine successfully boots into safe mode after this 20 minutes, but not still not into the normal OS x. I have ran a hardware test, and it stated the ram and logic board were fine, I have used the disk utility to reset permissions etc. Still no luck. Hope you can help!!