- Click the windows start menu, then run
- type cmd and press enter - this will start the command line interpreter
- type the path to the Arduino IDE installation (which you can find by your "Arduino short cut, Open File Location" trick), followed by arduino_debug.exe and press enter.
- If you get a security dialog, click "Yes".
- The Arduino IDE should try to start, then close and you will be left with a bunch of output in the command line interpreter window, which you should copy and paste here using code tags.
For example, if your Arduino IDE installation folder was at C:\Program Files (x86)\Arduino the command you should run is:
C:\Program Files (x86)\Arduino\arduino_debug.exe