How to re-install GDAL library for Python 2.7?

I am trying to install the GDAL library for Python 2.7 and I have followed different available instructions such as

http://pythongisandstuff.wordpress.com/2011/07/07/installing-gdal-and-ogr-for-python-on-windows/#comment-181

Unfortunately, I was not successful up to now and faced a lot of difficulties. I would like to remove all the installed files and re-install the GDAL library one more time. To be honest, I am afraid that I may remove something by mistake therefore I would like to have your guidance to help me with which steps I should do to remove the installation and start from scratch.

Solution

this is the best source you can find for python libraries pre-compiled for windows..

http://www.lfd.uci.edu/~gohlke/pythonlibs/#gdal

download the version you want and enjoy..