Word 2010 Crashes - Unknown Module - Only Some Documents

Situation: User has Windows 7 Enterprise x64. User has Word 2010. Word opens most documents fine (both .doc and .docx). There are seemingly random documents that will crash Word with the following error:

Faulting application name: WINWORD.EXE, version: 14.0.7160.5000, time stamp: 0x55fc2717

Faulting module name: unknown, version: 0.0.0.0, time stamp: 0x00000000

Exception code: 0xc0000005

Fault offset: 0x85157bd9

Faulting process id: 0x2e6c

Faulting application start time: 0x01d1079e71eacb68

Faulting application path: C:\Program Files (x86)\Microsoft

Office\Office14\WINWORD.EXE

Faulting module path: unknown

Report Id: b36b0fee-741b-11e5-a505-0026b987f448

What I know: This problem happens with random documents, seemingly received via email attachment. We are on a domain, and have identical computers for our users. A different user in the same area as this user, was able to open said documents without issue.

What I have tried so far

• The event log referrences some temp files in the user's appdata location, so I have cleared those out.

• Repair install of Office as a whole

• Changing default printer

• Running word in safe mode, and opening the documents

Anyone have any thoughts?

No resolution. Unable to pin down the problem to any one area. Already spent my maximum 2 hour troubleshooting window. Had to rebuild the machine. Following a rebuild on a new drive, all tested working. User was back up and running in about 90 minutes from that point.