You're looking for a product key for Windows 7 Build 7601.
If your PC no longer boots but Windows was previously activated, you can retrieve the key using a bootable USB tool like (from NirSoft) or KeyFinder . Run these from a recovery environment or a second PC by connecting the old hard drive as an external drive. product key for windows 7 build 7601
If your computer is older (less than 4GB of RAM, older CPU), installing a lightweight Linux distribution is far safer and faster than running unactivated Windows 7. You're looking for a product key for Windows 7 Build 7601
When Microsoft released Service Pack 1 in early 2011, it rolled up all previous security updates and bug fixes into a single package. Therefore, if you are installing Windows 7 today, you are almost certainly installing Build 7601. This is the final, stable version of the operating system before Microsoft ended mainstream support. If your computer is older (less than 4GB
Troubleshooting Windows 7 Build 7601: Activation and Product Keys Windows 7 Build 7601—more commonly known as Service Pack 1 (SP1)
: I want to emphasize that using a product key for Windows 7 or any other software without purchasing it or obtaining it through legitimate means may violate the terms of service and could potentially be illegal. Product keys are typically provided with the purchase of a Windows license or with a new computer that comes with Windows pre-installed.