Toshiba Support Forums: NB100 no usb power

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	Replies: 3 - Pages: 1 - Last Post: 02-Aug-2012 09:55 Last Post By: MasterG	Threads: [ Previous \| Next ]

Adrian59

Posts: 2
Registered: 15/07/12

NB100 no usb power - how to reset
Posted: 15-Jul-2012 17:59

The NB 100 has 2 usb ports on its right side. I tried plugging in an external cd drive and got a red flagged box from the bottom task bar stating something about device drawing too much power and that the supply would be stopped.
Since then the usb ports 'appear' dead. Nothing I plug in is recognised by the NB100.

It does say in the user manual that if an overload is detected the power to usb ports can be stopped. However, it does not say how to reset the ports ie power to them.

Both the card reader and usb port on the front left are still working.

I have tried updating BIOS to the latest 2.10, setting all bios settings to default using F2 at bootup and have even bought 'Device Driver' to ensure all drivers are up to date.

Can anyone help??? I'm sure there is a simple answer but just can't see it.

Ideally I would like to avoid having to reinstall XP as I don't have the disk and the hard drive doesn't appear to have an XP partition.

Help!!!!!!!!!

PauPau

Posts: 4,295
Registered: 21/09/09

Re: NB100 no usb power - how to reset
Posted: 16-Jul-2012 12:01

in response to: Adrian59

Hi

In your case I would recommend removing the USB port /controller /hub from device manager.
Just simply go to device manager, expand the USB controller area and delete all the devices which are available in this area.

After new reboot, the system (Win XP in your case) should recognize the USB ports and the driver should be installed again.
Then reboot once again connect an USB device and check if this helps…

Just for info: the USB 2.0 ports provide 500mA… so in some cases the external USB device would not be detected when such device would need more than the usual 500mA. In such case such device should be connected to two USB ports using an Y USB cable or should use an external power source as some USB hubs do.

Adrian59

Posts: 2
Registered: 15/07/12

Re: NB100 no usb power - how to reset
Posted: 02-Aug-2012 00:56

in response to: PauPau

Thanks for your reply and sorry it has taken me so long to get back on the forum.

I tried what you said - remove all USBs from the list under device manager. Once restarted XP automatically found the devices and reinstalled them. However the 2 USB ports on the right of the netbook still do not respond even when a simple USB memory stick is plugged in.

Do you think this could be a hardware issue?? The fact I got red warning bubbles on the task bar suggests to me that the ports have simply been shut down as it says they can be in the manual. Just how to reset them??

Very annoying as it is likely to be something simple. Just how to do it.

Any further help would be very mech appreciated.

Adrian

MasterG

Posts: 2,685
Registered: 21/09/09

Re: NB100 no usb power - how to reset
Posted: 02-Aug-2012 09:55

in response to: Adrian59

Hi

I found interesting workaround by Microsoft:
USB port may stop working after you remove or insert a USB device
http://support.microsoft.com/kb/817900

Would recommend checking all the recommendations.

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