I have a Dell D620 laptop that will not boot is a USB hrad drive is connected. After entering logon information the winows disapeards and A hour glass is displayed. This does not go away and you have to power down the laptop and disconnect the drive. Bios is updated to latest version available. As long as usb is disconnected it boots properly. It is a windows 7 laptop and safeguard client is 5.5
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