I need to run a 16-bit application on Windows 7, without the use of VM or Windows XP mode. This application runs well on one Windows 7 32-bit machine, and I need to run it on another machine which initially had only 64-bit Windows 7. I changed the system disc format from GPT to MBR and installed a 32-bit Windows 7 operating system on the 64-bit machine, and it works fine. However, the application generates a General Protection Fault in WIN87EM.DLL at address : 0001:02C9. I tried disabling the display adapter, but that did not help. Please advise.