I have a problem with Arduino Due. If I apply external power supply or just connect it to a computer with USB, it won't start at all. Then after I press the reset button or turn power off and on once again, it begins to work properly.
This issue doesn't appear if the board is put back to work only a short time period after its last turning off. But with a "cooling" time of about 5 min, the problem arises.
I have also tested with Uno. There seems to be no problem with it.
What should I do to fix this problem? Thanks.