USB Loses Connection to External Hard Drive <br /> <br />You encounter problems when you move data over USB from a Windows 7 or Windows Server 2008 R2-based computer that has an NVIDIA USB EHCI chipset and at least 4GB of RAM <br />http://support.microsoft.com/kb/976972 <br /> <br />USB external hard drives lose its connection and stops working. <br />http://answers.microsoft.com/en-us/windows/forum/windows_7-hardware/usb-external-hard-drives-lose-its-connection-and/101d6422-f103-4423-95e2-718ec5146f82 <br /> <br />Windows 7: External hard drive connectivity lost <br />http://www.sevenforums.com/hardware-devices/230871-external-hard-drive-connectivity-lost.html <br /> <br />USB 2.0 Hard Drive Losing Connection Randomly <br />http://raq.diskdoctors.com/USB-2-0-Hard-Drive-Losing-Connection-Randomly.aspx
