Been there done that. It was that horrible Windows'95 boot to clean DOS mode, which sometimes got messed up while renaming files and stuck in boot loop. Luckily I knew how to fix it. But it was getting really tiring after helping a few totally n00bs with that issue. The Windows problem wasn't connected to my application in anyway. But Windows recommended using clean DOS for the application, and that's why people often got into that MS trap.