It looks like you have a partial install there, possibly from an earlier version.

Do you see a "Python" entry in Programs and Features? If so, running a Repair on that may help, or removing it.

If you don't see another entry there, installing Python without tcl/tk support (which seems to be breaking when it gets up to doing shortcuts) and without pip support may get you to the end of an install, at which point you can run a repair that should bring back the missing files.

As a last resort, running these commands from the command line might also help clean things up:

msiexec /x {EB0611B2-7F10-4D97-BCF2-DCAAB1199498}
msiexec /x {5DB2183B-62D3-407F-BBC1-EAD2F36283FA}

If you get as far as running these, I'd keep running them repeatedly until you start getting errors (this is to make sure you aren't decreasing a reference count from 3 to 2 - we want it to go all the way to 0).