Although some components were installed successfully, errors were detected. View Error Log
Troubleshooting Tips
For information on known setup issues, see Microsoft Visual Studio readme file, readme.htm located at the root of the installation sources
Visit Microsoft Help and Support site for Knowledge Base articles on troubleshooting the installation of Visual Studio 2010.
To find Help from other Visual Studio Users, try the following newsgroups:
Visual Studio Setup
Microsoft Product Support
For details about this setup failure, see the setup log file.