Consider the following scenario. On a computer that is running Windows Vista Service Pack 1 (SP1) or Windows Server 2008, you connect a USB device to a USB port. The USB port is located on a generic hub that is attached to the root hub. Then, an overcurrent condition occurs on the USB device. However, you cannot automatically recover from this overcurrent condition. Instead, the USB device becomes unresponsive until you restart the computer. This symptom remains even after you disconnect and then reconnect the USB device.

Notes

• An overcurrent condition occurs on an electrical circuit when devices that are connected to the computer draw too much power from the USB port. An overcurrent condition may occur when the USB wiring is crossed up (short-circuited). This condition may also occur when too many devices are connected to the same hub. (This overloads the hub.)
• This problem does not occur if a USB device is plugged directly into a USB port on the root hub.

When you have a Windows Vista-based computer that is connected to a USB optical disc drive, and you resume the computer from Standby, you may receive a error message that resembles one of the following error messages:

STOP: 0×000000E4 (parameter1, parameter2, parameter3, parameter4)
STOP: 0×0000000A (parameter1, parameter2, parameter3, parameter4)

Notes

• The parameters in the error message vary, depending on the configuration of the computer.
• This issue may occur on a computer that is running Windows Vista, Windows Vista Service Pack 1 (SP1), or Windows Server 2008.
• Not all “0×000000E4″ or “0×0000000A” Stop errors are caused by this problem.

When you install update 938371 from Windows Update, you may lose access to the USB mouse or the USB keyboard on a computer that is running Windows Vista.

Notes

• This problem occurs when a very specific chain of events occurs in a specific order. This problem is not common. But when this problem occurs, it is very difficult to troubleshoot because you may lose access to the mouse and the keyboard. And, such access is required to troubleshoot the problem.
• See the “Advanced Troubleshooting” section for more information about the conditions in which this problem is known to occur and about the cause of the problem.

So you just woke up your PC and one of your USB devices isn’t working as it should? Here’s a half-dozen Microsoft suggestions on how to troubleshoot the problem. Keep reading →

Consider the following scenario:

• You are running a Windows Vista-based computer.
• This computer has a USB device, such as a USB fingerprint reader, attached.
• You resume the computer from standby or from hibernation,

In this scenario, you may receive the following Stop error message:

Stop 0×000000FE ( 00000008 , 00000006 , 00000001 , parameter4 )
BUGCODE_USB_DRIVER

Note: In this error, the value of the Parameter4 placeholder may vary.

Consider the following scenario. You connect a USB Chip/Smart Card Interface Devices (CCID) smart card reader to a Windows Vista-based computer through an external USB hub. Then, the USB hub is disconnected from the computer while an application is communicating with the smart card reader. In this scenario, the Smart Card Resource Manager may stop responding (hang).

After the Smart Card Resource Manager stops responding, you cannot stop the Smart Card Resource Manager by using Task Manager. Additionally, you cannot access the smart card reader even if the USB hub is plugged into the computer again. In this case, you have to restart the computer.

Note: This problem does not occur if the smart card reader is directly connected to the computer.

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