user28275: This might be a very simple question but I don't know which key represents KEY_LEFT_GUI on my keyboard. I thought it was the windows key but when I program Arduino Micro to execute it. Run does not open and it prints powershell on the "Search Programs and Files" section in Windows7 VM.  
  Keyboard.press(KEY_LEFT_GUI);
  delay(1000);
  Keyboard.press('r');
  delay(1000);
  Keyboard.releaseAll();

  delay(500);

  Keyboard.print("powershell");
  typeKey(KEY_RETURN);


user48106: I know it's a late answer, but you can use to open the run window:
Keyboard.press(KEY_LEFT_GUI);
  Keyboard.press(114);
  Keyboard.releaseAll();
And yes, as per1234 says, KEY_LEFT_GUI is the left windows key

28275: <p>This might be a very simple question but I don't know which key represents KEY_LEFT_GUI on my keyboard. I thought it was the windows key but when I program Arduino Micro to execute it. Run does not open and it prints powershell on the "Search Programs and Files" section in Windows7 VM.  </p>

<pre><code>  Keyboard.press(KEY_LEFT_GUI);
  delay(1000);
  Keyboard.press('r');
  delay(1000);
  Keyboard.releaseAll();

  delay(500);

  Keyboard.print("powershell");
  typeKey(KEY_RETURN);
</code></pre>
 48106: <p>I know it's a late answer, but you can use to open the run window:</p>

<p>Keyboard.press(KEY_LEFT_GUI);
  Keyboard.press(114);
  Keyboard.releaseAll();</p>

<p>And yes, as per1234 says, KEY_LEFT_GUI is the left windows key</p>
