Make sure you downloaded the stable version and also make sure if it is compatible with your 32 or 64 bits
To know if you are on 32 or 64 bits
Go to My computer (Computer)
And right click the space
Then click properties
Scroll down and you will find it
Or you can right click the program and click
Troubleshoot compatibility
Then wait til it loads then click troubleshoot program then
tick the first one which is "The program worked in earlier versions of windows but won't install or run now"
Then click next
And choose the old windows version you used to have
For example "Windows XP (Service Pack 3)"
Then click next then click start program wait till it loads and click save then quit
I hope I helped