I wanted to reinstall Win 7 (my E6230 had Ubuntu for a moment), the official image (Win 7 64bit Professional) obtained via Dell OS Recovery Tool did not have USB 3.0 drivers. Laptop only has USB 3 ports and no optical drive, so I could not finish the installation.

To overcome that problem I have added Intel USB 3.0 drivers (downloaded from Dell site after providing the computer's Service Tag) to USB images via DISM (http://codeabitwiser.com/2014/03/how-to-install-windows-7-with-only-usb-3-0-ports/).

Installation has completed, however after reboot computer crashed with bluescreen - image attached.

I would be grateful for any suggestions how to proceed :)