Grey with the apple logo and the fan is running at a high speed. What is the issue and what is the fix? Please help. Thank you.
PowerMac, iOS 9.3.1
TRY RESETTING THE SMU AND PRAM:
Resetting the SMU on a G5 iMac:
https://support.apple.com/en-gb/HT1767
and on resetting the PMU on a Power Mac G5, G4 and G3 :
http://support.apple.com/kb/HT1939?viewlocale=en_US
http://support.apple.com/kb/HT1436
Resetting PMU on PPC PowerBook and iBook:
https://support.apple.com/en-us/HT1431
Resetting your Mac's PRAM and NVRAM:
TRY RESETTING THE SMU AND PRAM:
Resetting the SMU on a G5 iMac:
https://support.apple.com/en-gb/HT1767
and on resetting the PMU on a Power Mac G5, G4 and G3 :
http://support.apple.com/kb/HT1939?viewlocale=en_US
http://support.apple.com/kb/HT1436
Resetting PMU on PPC PowerBook and iBook:
https://support.apple.com/en-us/HT1431
Resetting your Mac's PRAM and NVRAM:
I have an older G5 and the start up screen has gone to grey with the Apple logo and the fan is running at a very high speed. What is the fix?
