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. When copying data or files and folders … Continue reading Download KB976972 Update to Fix USB Device Stops Responding or Copying Error on Windows 7 or Server 2008 R2