What version of Premiere Elements?
Are you installing from a purchased download from Adobe or from an installation disc from the product purchased in boxed packaging?
If download, do you have the correct installation files for your 32 or 64 bit computer?
If you have Premiere Elements 13, are you trying to install it on Windows XP, Windows Vista, or Mac OSX 10.7? Version 13 does not support those computer operating systems.
Where does the installation fail? What, if any, error messages are involved?
Does the problem exist with and without the antivirus and firewalls disabled?
Let us start here.
Please review, consider, and supply more information.
If you need clarification on any of the above, please ask.