Use the
checked
attribute:
<input type="radio" name="browser" value="IE" checked="true"></input>
See here for explanation:
W3Schools[
^]
You can't have all the radio boxes set to "no": that isn't how radio buttons work. One of them is always set to true.
If you need a case when none of them are checked, either add a "None" Radiobox, or convert them to checkboxes instead of radio.
<input type="checkbox" name="browser" value="IE">Internet Explorer<br>