|Microsoft designed Windows NOT to be transferrable like that. Let's say you have a Win7 computer with an AMD CPU, motherboard based on an AMD chipset, & an AMD/ATI graphics card. You remove the HDD from this system & then place it in a system with an Intel CPU, motherboard based on an Intel chipset, & an nvidia graphics card. Do you think it will boot? Probably not. At the very least, Windows would have to be repaired & the different drivers would have to be installed. You would be better off wiping the HDD & doing a clean install from scratch.|
"I was wondering if you could just take that hard drive out of your old computer with windows 7 and put it into a new one"
Why would an "old computer" have Win7 on it but a "new one" would not? Logically, a new computer would have Win7 or Win8 & an old one would have XP. And if an XP computer was upgraded to Win7, that would mean you would probably have a Win7 disc. And if you have a Win7 disc, all you would have to do is install it on the "new one" after uninstalling it from the "old computer".
Or you could just download Win7 AIO & use that on as many computers as you want, lol.