SQL Server 2005 Express Edition Problem

Dear All,
When i installed SQL Server 2005 Express Edition first time on my pc, i doesn’t got any problem, After that i uninstalled and tried to install in my pc, during the installation i found a message.

“None of the selected features can be installed or updated.Setup cannot proceed sinse no effective change is being made to the machine.To continue, click Back and then select features to install.To exit SQL Sever Setup, click Cancel”

I cannot able to install SQL Express on my pc.Can anyone tell me solution to install SQL Express Edition on my pc.

Thanx in advance.