• Ensure that the X-image software has loaded properly and all the on-screen instructions have been followed. Do not interrupt the X-image process until it has it finished this process
• Check all external peripherals ( mouse, keyboard cables etc…) to ensure that they are tightly secured into the computer system
• Retry re-booting the system. Prior to re-booting remove the battery and power cable. Hold down the power button to remove any charge from the motherboard. You can now replace the battery and power cable and re-boot. The same process is used for both a laptop or desktop

• Reboot your computer
• Tap on the F12 key repeatedly until the boot option menu appears
• Choose diagnostics on a laptop computer or hard
  drive diagnostics on a desktop computer

http://support.dell.com/support/topics/global.aspx/support/change_order/en/tag_transfer