[header] How to halt a program installing to your computer [title] If a program will not stop installing when you push the " cancel " button, it means one of 2 things. [step] A: the program is unresponsive, or b: the program is installing malware and wants to infect your computer. There are a couple things you can do : [title] First off, try hitting the cancel button. 
[step] Your computer might just be unresponsive, and will cancel the install when it recovers. [title] If it still won't stop, open task manager.