Aero effects was introduced in Windows Vista as an added feature, but this feature was not available in home version of Vista and also Windows 7 Home. Also this feature is not allowed when PC does not have sufficient requirements to enable aero. Furthermore there is an internal Hardware Check which only allows you to run Aero if passed. Aero enabler is a freeware tool which can enable Aero for you and additionally disable the Hardware Check if required.

AeroEnabler

Basically this tool is for Windows Vista and Windows 7 home users where aero is not available by default. As this tool changes some registry settings and there might be problems if your computer does not meet Aero’s system requirements, you shouldn’t try this tool if you are not confident or interested in changing the registry settings.

Download Aero Enabler