Before installing Windows 7 64-bit, make sure your computer meets the minimum system requirements:
Windows 7 (64-bit) is a major release of Microsoft’s Windows NT operating system, launched in . It was the successor to Windows Vista and became one of the most loved Windows versions due to its stability, performance, and familiar interface. The 64-bit version allows use of more than 4 GB of RAM and supports modern (for its time) 64-bit processors.
This was the major selling point of Windows 7, fixing the unpopular interface of Windows Vista.