The exact error message is as follows:
16 bit MS-DOS Subsystem
The NTVDM CPU has encountered an illegal instruction.
CS:0dee IP:1997 OP:ff b9 07 f5 ff Choose 'Close' to terminate the application.
This error began after I ran a third-party application to partition the hard drive, which required a reboot and did some damage to the files on the hard drive. I ran chkdsk twice and everything is clear now except for this message which appears on boot because Windows 7 tries to load this start-up dll.
Can't find a "Windows 7" fix, I ran mfc /scannow which did nothing to resolve the problem.