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Usb drives Could anyone please tell me if the usb points in a pc. Are they powered by there own power supply as all of a sudden not one of them is working

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USB hubs operate at 5V DC power, as do a lot of things on your motherboard do. They are able to transmit DC power to a device which makes it possible for items to be plugged straight into a USB port and not have an external power supply.It sounds as though the main connection between the USB points and the power supply has become broken, as a lot of USB points are connected in series to save space. Also, one point on the USB line could have possibly become grounded. A fewer simple measurements with an OHM reader may help in this situation.

Posted on Mar 25, 2008

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Drive stopped responding -- problem with power supply or drive?


click start control panel administration tools computer management device manager look through all of your devices if you see a yellow question mark?or exclamation mark ! or red x
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check usb leads for secure dust free seating

sometimes the wires inside the cable will be damaged due to bending or stretching or placing heavy equipment upon the cable


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http://www.fixya.com/support/r3567552-resolving_intermittent_windows_usb_devic

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