I've been having problems lately with my Minecraft installation where I was getting extreme lag doing the simplest tasks, so I've been trying to reinstall all my mods and forge itself. I already deleted and uninstalled forge from my computer and my minecraft installation, but for some reason when I try to run the installation file I downloaded from the forge website to run it again, it won't run. Neither the .msi or .jar will work, all that happens when I click on them is the mouse cursor displays the "working" symbol then stops and nothing further happens.
What is wrong with my computer? Why won't forge install? I need help bad.