The following error is getting displayed when I try to install the SQL Server R2 Express
The feature you are trying to use is on a network resource that is unavailable.
Click OK to try again, or enter an alternate path to a folder containing the installation package 'sql_common_core.msi in the box below :
Use source : ....
Second warning message : Your SQL server 2008 R2 installation completed with failures.
Please help needed.
Pat