So, I just got my new Windows 8 desktop PC last week, At first it was alright, but now for whatever reason, I can't seem to install any software. It begins the process of trying to install like normal, but the progress bar in the window never advances at all. After a few minutes, anything that is running on the computer will become unresponsive (Windows Explorer is always the first to go), and the only thing I can do is hold down the power button until it shuts off. Every once in a while after a few restarts and retrying the install, the install will hang for a few seconds before the progress bar advances and then the User Account Control window will pop up (the screen will darken and ask me if I trust this software, etc.). Once I click yes, the install continues, and is done successfully in a few seconds. I have tried disabling UAC to see if that is the cause, but I still get the same hang followed by having to firceibly restart it. Any ideas?