Windows 8 needed restart because "PC ran into a problem"

Screenshot attached below:
Edit: Got the message that this is a BSOD and need to go through the procedure regarding log files. I will try to figure that out. Thanks.

Problem: The screen went blue with the unhappy face telling me that my PC had a problem and had to restart.
It told me the problem was related to a _Bad_Pool_Header.

PC was working normally.
Uninstalled a previous version of LibreOffice
Installed new "stable" LibreOffice 4.2.3
Opened it to check it.
As with previous version, I do not get "many" font previews on the the font drop down list, just the font name in regular type. This is a "problem," but not the one I'm concerned about in this thread.

I closed LibreOffice.

I opened WordPad to check the font list "previews," which normally appear perfectly. They appeared normal. Moments after I clicked the list to open it, the screen went blue with the unhappy face telling me that my PC had a problem and had to restart. A percentage was shown of the system working to collect data about the problem. It then restarted.

The files that Windows 8 wanted to send to Microsoft are listed below in the screenshot.

I ran SFC /scannow. No problems.
The problem has not reoccurred yet.
What should my level of concern be about this?
Is there anything I should do to address it?

Just a note. Before the error, previews of some of my LibreOffice-related documents were shown in the "file history" area when the program launches (recent documents the program located). After the problem, it was empty. I just found that odd.

Hi, as you say, the log files might give you a clue. You need a bit more info. As you probably know, often a driver issue may cause a bad pool header report- or RAM problems. For example. But I'm guessing (without checking) it's a newish laptop..?
You might find 2 or 3 of Nirsoft's tools of interest: bluescreenview (don't know how good this is with Win 8); Driverview; Wincrashreport; appcrashview; And for drivers: Resplendence Software - WhoCrashed, automatic crash dump analyzer

Of course, if the problem doesn't recur, you've nothing to look at... but you can at least get some tools to be ready for the event.

(Note: sometimes incompatible drivers can stop you getting into Safe Mode- so it's worth checking that still works).