Computer Crashed when I wasn't around it.

I don't have the eyesight to wade through a dump file. My educated guess is two or more programs "fought" over the video card's resources [and/or memory resources] and the computer lost, locked up, forcing you to reBoot. Please let us know what you find out, I'd like to learn what happened.

What make & model of router are you using? Netgear?

Code:

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*                        Bugcheck Analysis                                    *
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Use !analyze -v to get detailed debugging information.

BugCheck A, {fffffa801c8b7178, 2, 1, fffff80002adbce5}

*** WARNING: Unable to verify timestamp for npf.sys
*** ERROR: Module load completed but symbols could not be loaded for npf.sys
Probably caused by : npf.sys ( npf+2bb2 )

Followup: Machine

Owner
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Code:

NETGEARGenie	"c:\program files (x86)\netgear genie\bin\netgeargenie.exe" -mini -redirect	Jesse-PC\Jesse	HKU\S-1-5-21-3412668259-37210293-2247835427-1001\SOFTWARE\Microsoft\Windows\CurrentVersion\Run

This bugcheck is caused by the WinCAP implementation used by NETGEARGenie. You can fix this problem by updating the router's firmware. See link for instructions:
NETGEAR Support | Answer | Reinstall the firmware on a router without the setup CD recovery tool

Read this BSOD thread:
BSOD Win7 Laptop - when entering Sleep mode - Tech Support Forum

Why is NetgearGenie installed and running?

Check for updates to the software or uninstall it to prevent BSOD'S.

Why don't you simply use some security to prevent unauthorized access to your network?

Yes.