Windows 8 installation

[MomoABCDF]

Hey guys,
I'm new here and I'm glad to chat in Tom's hardware.
I have a 6 months-old desktop running win7 and i think to upgrade it to win8 pro as there is a discout. But the problem is that I have an old toshiba laptop under win vista and i want to upgrade it windows 7 USING THE SAME KEY AS ON MY DESKTOP (have the oem installation disc). Will it let me to activate win7 on this laptop of course after ugrading to win8 on the desktop? Also if this is possible are there going to be any driver compatibility issues on the laptop and what should I do?
Finally I'd like to hear some opinions about Win 8 - is it better than 7, any bugs, performance,etc.?

Thank you, I appreciate it.

 

[weaselman]

My advice stick with windows 7, Don`t quote me on this but i think if you buy the upgrade version of windows 8 then it will use the licence key for windows 7 and the windows 7 may be deactivated since the key is in use by windows 8. Befor you install it I would do an online comparability check on all the computers to make sure windows 8 will run and all the hardware is supported by it. You can do this by going to the windows 8 web page of microsoft.

 

[das_stig]

One question, one post.

http://www.tomshardware.co.uk/forum/2413-57-windows-installation

 

[MomoABCDF]

Best answer selected by MomoABCDF.