Grey Screen Issue on Boot Up Old G5
power mac g5 2003 dual-OTHER, Mac OS X (10.5.8)
You have a Power Mac and the appropriate place to post is here:
You posted in the Mac pro desktop forum and all Mac Pros have Intel processors.
I requested you post be moved to the Power Mac desktop forum
- Try resetting the SMC and NVRAM/PRAM
Intel-based Macs: Resetting the System Management Controller (SMC)
https://support.apple.com/en-us/HT201295
About NVRAM and PRAM
https://support.apple.com/en-us/HT204063
- Try starting in Safe Mode
OS X: What is Safe Boot, Safe Mode?
https://support.apple.com/en-us/HT201262
- Next, can you boot from an install disk?
Grey Screen Issue on Boot Up Old G5