How to Disable Aero in Windows 7
For more ways to Speed Up Windows 7:
You should disable Aero theme in Windows to cut down on the amount of RAM usage that is used for Windows. Using the Basic and High Contrast is a better choice because it uses a lot less RAM.
The more availabe RAM you have the more speed and performance boost you will have. There are multiple other ways to optimize you system for speed.
how to repair windows 7