Hi Guys, My G5 OSX 10.4 on restart displayed the date&time error message (attached). And yes it was causing my applications to run erratically, such as not loading. After updating the time both manually or automatically, on restart time would revert to 1970 with the error message re-appearing. I erased my hard drive tried to install OSX 10.5.1 1st attempt it was unable to locate my hard drive for install location, it simply paused. 2nd attempt it located drive, but during install white page full of errors appeared. 3rd attempt it appeared to install fine. But again on restart the date time error message appeared, time set to 1970. Updating time didn't help. I upgraded OSX 10.5.1, during install it displayed an Update OSX error message (attached). After this error message I restarted but I can't get past the grey loading screen. If it helps here's what im running: If it helps here's what im running: Model Name: Power Mac G5 Model Identifier: PowerMac7,3 Processor Name: PowerPC G5 (3.0) Processor Speed: 2.3 GHz (Dual-Processor) Number Of CPUs: 2 L2 Cache (per CPU): 512 KB Memory: 512 MB Bus Speed: 1.15 GHz Boot ROM Version: 5.2.4f1 Any help would be much appreciated. This is becoming a real mission.