Unable to install the 3D CAD design software solidworks 2012

Hello friends,
I have been trying to install the 3D CAD design software solidworks 2012 on my system. I have tried to install it many times, but every time, I am met with an error on my screen. The screenshot of the installing log file is as follows:

Internal error: The Windows Installer for this product component did not run as expected: 1903.
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I uninstalled my antivirus also and then tried to install solidworks again, but I got the same error. I don’t know what this error 1903 means. I have searched a lot for this, but all in vain. If anyone has any idea, please do let me know and help me in getting out of this bad situation. I am badly stuck.
Your comments are awaited.
Regards.
