PC stucks on installing Config Messenger

Why is it that my new Acer Aspire 5560-Sb410 laptop is stuck for several hours now? I am just installing Config Messenger. I’m sure that I complied correctly to the initial instructions given on setting up this laptop. I’m trying to get an access to Windows 7 but wasn’t able to do so, since the window still showing setup for Config Messenger that is still being installed. I appreciate any ideas regarding this problem.
