Can someone point me to a Window 8 troubleshooting site?

I know practically nothing about Windows, and even less about Windows 8. I installed an application today to mount ISO files and things have been screwed up since. I have no icons along the bottom, and although I see my desktop, I keep getting "Windows not responding" whenever I selct the only remaining icon which is the Microsoft Window icon in the lower left.
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I have a new issue, it won't power up VMs that used to work. It is complaining I have the wrong version of a file. I am in the process of applying the upgrades again now. Hopefully it won't break the box again.
I just double click on an iso and it is mounted as a DVD, no extra applications are needed.
I tried Debian, Centos, Technet andvisual studio, they are all mounted as Microsoft Virtual DVD-ROM.
As a note, I have Hyper-V enabled.
You'd have to right-click the ISO file > Properties > click "Change" under the "General" tab > click on "Windows Explorer" > OK.
I got the answer straight from this link.