I have a Dell laptop. I didn't know which edition of my windows was previously and I reinstalled Windows 7 ultimate 32bit edition. While activating it with the key printed on the sticker at the back of my laptop, it says "The product key you have entered will not work with this edition of windows 7.
You must either run Windows 7 setup or enter a Windows 7 ultimate key" So when I visited the website of manufacturer, I found that the original version of OS on this laptop was Windows 7 SP1 Home Basic (64BIT). Now what can I do?