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Graphics driver issue

Hi

UE keep crashing my graphics driver. I have an NVidia GT630M and have the most recent update of NVidia drivers installed. The debug crash report is:
Problem signature:
Problem Event Name: APPCRASH
Application Name: UE4Editor.exe
Application Version: 4.14.3.0
Application Timestamp: 586fbd3d
Fault Module Name: nvwgf2umx.dll
Fault Module Version: 21.21.13.7892
Fault Module Timestamp: 58cb13cd
Exception Code: c0000005
Exception Offset: 00000000009fe916
OS Version: 6.1.7601.2.1.0.768.3
Locale ID: 7177
Additional Information 1: b11f
Additional Information 2: b11f036c18c0f15d66e8724473e1178e
Additional Information 3: f018
Additional Information 4: f0180815f45a51f13c8e8dd09737399c

My NVidia error that pops up momentarily says something along the lines of “NVidia drivers have crashed but have been successfully restored.” Unfortunately in the process UE crashes and I lose whatever work I’ve done. Any ideas?