Currently Being ModeratedNov 2, 2011 12:27 PM (in response to trisport3)
Press Option-Command-P-R until you hear two beeps
This resets NVRAM.
May be it will support more power.
Currently Being ModeratedNov 2, 2011 12:36 PM (in response to WALTER-MILANO-ITALY)
Not getting any beeps, just the print screen comes up
Currently Being ModeratedNov 2, 2011 1:01 PM (in response to trisport3)
Sorry I was not really clear.
Disconnect your mac from power for at least 1-2 minutes. Remove the plug.
Than while starting it again press all 4 key toghther untill the 2 beeps.
Currently Being ModeratedNov 2, 2011 1:24 PM (in response to trisport3)
Not sure if resetting the PRAM will actually work but worth the try since it doesn't cost anything and it's about the only thing you can do other than replacing the keyboard or doing some more detailed trouble shooting.
From what you are saying you are plugging in a USB hard drive or memory stick into the extra USB slot on your new keyboard and getting this error? This is pretty common since there usually isn't enough power on that plug for anything other than a mouse or low power usb stick.
Are you plugging in the exact same thing to your working iMac at home? If yes then I would take this new keyboard home and see if it causes the same issue at home. If not then something might have changed in the manufacture of this new keyboard.
Btw this forum is for older pre iMacs.
Currently Being ModeratedNov 2, 2011 1:52 PM (in response to Niteshooter)
I had been trying a 4 gb sticks, I found a 2 gb and tried it and it seems to work just fine. So that most be what the issue is. Out of curiosity I am going to try the 4 gb at home. I thank you both for your time and help.
Currently Being ModeratedNov 2, 2011 2:45 PM (in response to trisport3)
Suggest you buy an AC powered (power adapter) USB hub. Then you won't get the low USB power message. You can get a hub at most computer/on-line stores for $10-20. The hub plugs into you Mac's USB port and provides 3 or more powered USB ports.
Cheers, Tom G4 1.25HGz MDD, PB 12" G4 1.5GHz, Mac OS X (10.5.8), (10.4.11, 9.2.2) iSight,iPad2