taz3m:
However, i removed my maker shield board and tested my UNO R3 board again.I applied a simple sketch of blinking 1 led only, here again my Board resets itself repeatedly after an interval of 1 min or less.
Just to clarify. You have a Uno board, no shield at all, connected to a single LED on pin 13, via a 1K resistor (to ground). Is that right? And running what sketch?
And it resets after 1 minute?
How do you know it resets?