If you want to run Windows 7 on your PC, here's what it takes:
Processor 1 GHz or faster 32-bit (x86) or 64-bit (x64) processor
Memory 1 GB RAM (32-bit) / 2 GB RAM (64-bit)
Hard disk space 16 GB available disk space (32-bit) / 20 GB (64-bit); for the download version, an additional 3 GB is required
Media drive DVD/CD authoring requires a compatible optical drive
Connectivity Internet access (fees may apply)
Sound card Music and sound require audio output
Video...
