Unable to install Python on my windows 8 PC

[Prospero Akai]

I forgot to check the 'Add To Path' box while installing python from
www.python.org. I uninstalled then try to install again but I have been
getting this error message since then:

one or more issues caused the setup to fail. please fix the issues and then
retry setup. for more info see the log file.

0x80072ee7-Unspecified error


I will appreciate your response.
(Akai, Nigeria)