Last thing I see it say is Building Cache..
Problem signature:
Problem Event Name: APPCRASH
Application Name: rundll32.exe
Application Version: 6.1.7600.16385
Application Timestamp: 4a5bc637
Fault Module Name: nvwgf2um.dll
Fault Module Version: 9.18.13.3165
Fault Module Timestamp: 52676afa
Exception Code: c0000005
Exception Offset: 0012974d
OS Version: 6.1.7601.2.1.0.768.3
Locale ID: 1033
Additional Information 1: 0a9e
Additional Information 2: 0a9e372d3b4ad19135b953a78882e789
Additional Information 3: 0a9e
Additional Information 4: 0a9e372d3b4ad19135b953a78882e789
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Is dxdiag started normally?
Your environment is not normal.
I cannot point out a cause correctly.
Please search "nvwgf2um.dll". There are various examples.