USB Power Error

I have been getting a USB power error that says....
Because a USB device was drawing too much power from your computer, one or more of your USB devices have been disabled.
Originally, got it last week when connecting an iphone to charge. I tried multiple white cables, still error. I restarted and now, each time i restart, without ANYTHING plugged into the 2 USB ports, I still get the same error.
So....it would seem that some other device inside the computer, is causing the problem? I have a mid 2009 13 inch macbook pro....and it was never a problem before last week.
Ideas to fix, or is something dying?

Try SMC and PRAM resets.
http://support.apple.com/kb/HT3964
http://support.apple.com/kb/HT1379
Ciao.

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If a 5G iPod,
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Hi
I am having USB power problems since upgrading my BIOS to 5.2 a few days ago on receipt of an e-mail from Toshiba advising the upgrade
I have a A100-200 PSAA8E running Windows XP Media Edition since upgrading the BIOS to 5.20 I get power fault messages but only when the PC comes out of standby
The error message tells me that " A USB device has exceeded the power limits of its hub port"
I have nothing connected to any of the USB ports
I have spoken to the tech guys at length at Toshiba but they cant seem to explain or fix the problem---one even thought it might be a motherboard problem but I've discounted that as the timing is too coincidental to be anything other than the BIOS upgrade.
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Comments appreciated
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> Hi
>
> I am having USB power problems since upgrading my
> BIOS to 5.2 a few days ago on receipt of an e-mail
> from Toshiba advising the upgrade
>
> I have a A100-200 PSAA8E running Windows XP Media
> Edition since upgrading the BIOS to 5.20 I get power
> fault messages but only when the PC comes out of
> standby
>
> The error message tells me that " A USB device has
> exceeded the power limits of its hub port"
>
> I have nothing connected to any of the USB ports
>
> I have spoken to the tech guys at length at Toshiba
> but they cant seem to explain or fix the
> problem---one even thought it might be a motherboard
> problem but I've discounted that as the timing is too
> coincidental to be anything other than the BIOS
> upgrade.
>
> If anyone knows of a fix then I would be grateful--is
> it possible to locate a previous BIOS and roll
> backwards from 5.20
>
> I am assuming that if its the BIOS then when they
> issue another one it will correct itself?
>
> Comments appreciated
>
> Phil
I have an Equium 100-147 and am also getting 'A USB device has
> exceeded the power limits of its hub port" message
. It doesn't seem to affect anything. It seems to be just a nuisance value. I have nothing connected to the usb ports when it flashes up and also the message only appears now and then. I also updated the bios. Oh well!

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Normally the error you get is about the port not having enough power, so I don't know how it could be too high. Not sure what you mean by "bucked the battery" either, but it doesn't sound good. If it were me, I'd consider swapping the iPod for a new one to see if it's defective.

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Hello Everyone,
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Things you need:
Camera
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Power bank (I'm using 8,400 mAh)
Dual USB Male to 5 Pin Mini USB Y Cable
Ipad
Procedure:
Camera --- 5 Pin Mini USB ------------------ USB camera adapter ---------- Ipad
'---------- Power Bank
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your welcome

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JerseyDevil8 wrote:
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See if this link helps.
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http://docs.info.apple.com/article.html?artnum=43023
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hello nuno.nelas and welcome to the  forums.
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eMac: How to Replace the Backup Battery
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"I get the feeling that this is a software issue that could probably be solved quite easily"
Since you have already tried all the normal troubleshooting solutions, take the iPod to your nearest Apple Store for a *proper diagnosis.* The staff there will be able to confirm if your problem is software or hardware _*at no cost to you.*_
!http://i50.tinypic.com/izvwo1.gif!

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If a non-Apple cable and the place will not take it back then:
USB Power Adapter Takeback Program

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