I know I'm sounding quite stupid with the easy to understand information you are providing me, so to clarify, buying the full retail version from Best Buy or wherever is a better investment, because I can reformat and reuse it on this computer, on my new computer and somewhere else whereas OEM is exclusively for one PC?
With windows 7 being relatively new, I would buy the retail copy. It will likely outlast at least 1 build. By being able to legally use it again on a new build, or upgraded build, it's worth the extra $$.
Alright, thank you, but the only one question I want to clarify is can I use it on more than one computer simultaneously? I do not clearly understand what you mean by "being able to legally use it again." Do you mean I can install it in multiple computers (all of them functioning simultaneously) whereas OEM is exclusively locked by one computer? I'm clearly sounding stupid now, so I apologize for that.
If you want to install Windows 7 on multiple PCs, you will need to buy the Windows 7 Family Pack. It allows you to install it in up to 3 computers.
Let me try to make this as simple as possible. When you install Windows on a computer, it will ask you to enter the code that came with your Windows install disk. After installing, your computer will connect to a Microsoft server to look for updates. At the same time, it will send info about your computer to their server. This will identify your computer and attach it to the activation code you had entered.
If you install it on a different computer and use the same code, it will say that the code is invalid since it is already linked to your other computer. If you want to use it on the second computer, you will have to contact Microsoft and have them deactivate it from your old computer. So the answer is NO. You can NOT use it on 2 different computers simultaneously.
Buy the family pack and it will allow you to install it on 3 different computers.
Microsoft allows you to install and activate it a few times, before you have to call their support line. The reason isn't to allow people to break the license agreement. It's because they recognize that fresh installs are usually needed, and people don't want to be hassled with having to call every time.
So I'll put it this way. It is possible to install on multiple computers at once, with a single license copy. However, it's a violation of the EULA.