Hello sai.2905,
Please check out the requirements here for Windows 7:
If you want to run Windows 7 on your PC, here's what it requires:
•1 gigahertz (GHz) or faster 32-bit (x86) or 64-bit (x64) processor
•1 gigabyte (GB) RAM (32-bit) or 2 GB RAM (64-bit)
•16 GB available hard disk space (32-bit) or 20 GB (64-bit)
•DirectX 9 graphics device with WDDM 1.0 or higher driver
You can find the official Microsoft Windows Upgrade Advisor here:
http://tinyurl.com/no4xb7
Thanks again and good luck!
John M.
Microsoft Windows Client Support