Download KB976972 Update to Fix USB Device Stops Responding or Copying Error on Windows 7 or Server 2008 R2.
On a Windows 7 or Windows Server 2008 R2-based
computer that fulfills that following requirements:
- Running Windows 7 or Windows Server 2008 R2.
- Has an NVIDIA USB Enhanced Host Controller Interface (EHCI) chipset.
- Has at least 4GB of RAM.
An error may occur when user tries to copy data from the computer to an external USB
storage device.