Hello, I am YiChun Chen from MSDN forum support team.
How to install Visual Studio and .NET Framework
We can try the following steps to check the installation media:
Once the ISO image has been created, either:
How to troubleshoot errors during the installation
a) If you're running XP or Windows Server 2003:
i. Use Cleanup tool to clear the failure installation of .NET Framework
ii. Run the installer to install Visual Studio products or .NET Framework products
iii. If any problem occurs during the installation, please collect the log files for further troubleshooting.
(Please follow the following steps to collect the log files)
b) If you're running Vista or Windows Server 2008:
i. Check whether you have turned on the windows feature of .NET Framework 3.0.
Please go to Control Panel -> Programs and Features -> Turn Windows features on or off -> Check the box next to Microsoft .NET Framework 3.0.
ii. Use Verification Tool to verify .Net Framework 2.0, 3.0. You can check the “Current status” to know the result.
If .Net Framework 2.0 and 3.0 cannot be verified on your computer, you can try to follow the steps mentioned in the following blog to repair the .NET Framework 2.0 and 3.0.
iii. If .NET Framework 2.0, 3.0 are verified successfully but the installation still fails, please collect the log file.
c) If you're running Windows 7:
i. Check whether you have turned on the windows feature of .NET Framework 3.5.1.
Please go to Control Panel -> Programs and Features -> Turn Windows features on or off -> Check the box next to Microsoft .NET Framework 3.5.1.
ii. If the installation still fails, please collect the log file.
iii. (Please follow the following steps to collect the log files)
d) The steps to collect the log:
i. Try to clean your "%temp%" folder (Start Menu >> Run >> Type "%temp%")
ii. Install Visual Studio products or .NET Framework products
(For Vista or later OS, the installer must be run with administrator privileges - Right-click the installer >> "Run as Administrator")
iii. Collect the logs from "%temp%" folder
Collect tool: http://blogs.msdn.com/heaths/archive/2008/05/09/visual-studio-and-net-log-collection-utility.aspx
iv. Get vslogs.cab
How to diagnose log files
Time stamp in the VS setup log or .NET Framework setup log can be helpful to diagnose the problem, you can see what happened in order during the installation and what occurred just before the error or exception arose.
For detail information, please check: http://social.msdn.microsoft.com/forums/en-US/vssetup/thread/0376db8f-4761-4ae5-9af2-98c53216318a#How_to_diagnoseVS2008_NETFramework_logs