If you are trying to install windows 8.1 but your laptop shipped with windows 8 the product key will not activate during the installation, but it will activate successfully inside of the OS.
To get around this install windows 8.1 with the ei.cfg which allows you to skip the activation durring...
Download PKeyui. You can find it here: http://www.chip.de/downloads/Windows-8-Product-Key-Viewer_58663752.html
Once you have it downloaded, select MDM Info and that is your windows product key pulled from the firmware of your laptop.
If you can't get into the OS as it requires a product...
Hello,
I am running dual 4870x2s in CrossFire on an X48 chipset using Windows Vista 64bit. While attempting to output from my computer to dual 52" Phillips LCD TVs I am unable to get both TVs working at the same time inside of windows in Cloned or Extended Desktop mode. Both TVs work...