Hey just came across this here. Ensure your keyboard and mouse are attached to the 2 USB 2.0 ports and not USB 3.0 ports. [IMAGE] The Windows 7 install should no longer freeze at this screen. Use your Dell Reinstalaltion DVD opposed to the .iso.
I just got a Alienware X51 and accidentally put the Windows 7 disc in that came with the pc in and when it finished installing it completly shut down my computer and then I could not see the screen anymore.  So I went out and bought a HDMI to DVI adapter so I could see the screen again like the support people on the phone told me to do. That fixed the problem with not being able to see the screen. They now are sending me a new hard drive because at the screen to reinstall windows 7 to get back to the desktop the screen freezes.  So they say the hard drive is creating the problem.  They are making me pay 100+ dollars to fix all this and I am worried that I wont be able to fix this computer. SOMEONE PLEASE HELP ME!
Windows 7 CD Problem... Cant get back to my desktop