My laptop is T400 coming with 32-bit Windows 7 Home edition. Since T400 CPU is 64-bit, I am considering to install 64-bit Windows instead, probably Windows 7 or 8 Home or Professional or Ultimate. I don't have the installation CD or DVD of any of the OSes. If I can find someone has one, is it allowed to borrow and install it on my laptop?
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If I can find someone has one, is it allowed to borrow and install it on my laptop?
Using a different CD/DVD is not a problem. You can even download the ISOs from a safe source (See this link).
However you will need a legal CoA. In most cases the CoA you got when you bought the 32 bit version of windows 7 will work fine for the 64 bit version (and do so legally).
In the case of OEMs there sometimes are exceptions, so check that before installing.
