HELP! screen says: USB OVER CURRENT-hub will be deactivated

[alainr]

when i turn on my mac, i get this message:
USB OVER CURRENT NOTICE
A usb device is currently drawing too much power.
the hub to which it is attached to will be deactivated.

This happened since i had my one to one lesson and brought my imac home and plugged everything into it again. nothing new has been added.

i just click on the OK button when i get this message. does it hurt anything?
any suggestions what I shld do?

 

[Schtumple]

It's not good that's for sure, repeated exposure to this could do damage your motherboard. The first time I ever got a usb over current error the power unit on my mbp died and it wouldn't turn on. I'd ring apple and see what they say but I can almost guarantee they'll blame whatever you're plugging in regardless of what you've say.

 

[alainr]

Cld the genius bar have messed it up?

This message started when i came home after my one on one AND a session at the genius bar where he "cleaned"up my mac so it wld run faster as it was slow--repaired permissions and....

cld something have been done that caused this message to come on now when i turn on my imac?

It's not good that's for sure, repeated exposure to this could do damage your motherboard. The first time I ever got a usb over current error the power unit on my mbp died and it wouldn't turn on. I'd ring apple and see what they say but I can almost guarantee they'll blame whatever you're plugging in regardless of what you've say.

 

[CJS7070]

So you have no new hardware connected?

 

[JediMeister]

The USB overcurrent error has only two fixes generally. One is the SMC reset, the other is service, likely for the logic board. I very much doubt that whatever maintenance scripts the Mac Genius ran on the system would have caused this.

 

[Gav2k]

What's plugged into the USB ports. I bet you have plugged them back in different ports loading one bus more than the other taking you over the limit a tad.