I have made a restore windows 8 laptop- "Remove Everything and Reinstall Windows",
But-i got 1 problem :)
in new installed copy of windows- its not activated ?
So I called Microsoft- and they told press Win+R-> slui 4 ->and read out the number ->and told contact Dell,
Now Dell-> gave 4 solutions
See here http://1drv.ms/1edVWqJ
Nothing worked- > dell is asking to check with Mocrosoft -> while MS asking windows is not activated ?