Odd MacMini on Windows 7

So I continue to mess with my MacMini, and found that I was able to proceed a little bit more on the Windows Update, but still failed at one IE 11 security update item....

And then I found that there's no sound coming out of my MacMini's headphone jack. No problem, as I later found out that I can fix the problem by installing drive at BootCamp 4.0 folder "RealtekSetup.exe".  I also used that file set to installed the "Co-Processor" that seemed to fail to have driver installed.

But then I just realized that I got a new problem: access my closet file server does NOT work with IP address.  I have to use the machine name.  The odd thing is that it was working ok just little hours ago.