Arduino uno not executing programs...

Hello.

I have an arduino uno R3. I am able to upload the programs with no connectivity issues. But there is a problem while executing the program and I don't know what that is. The 13th pin led is not blinking as the default bootloader program comes with preloaded blink program. I am not able to reset the board too. What might be causing the problem?

I even tried to reload the bootloader program. But the same think happens yet again.

Thanks in advance and Regards,
Rishi.

just try this below code.Send me Serial output window if uploaded succesfully. Can you share me upload messgage when you upload below code

int led = 13;

// the setup routine runs once when you press reset:
void setup() {                
  // initialize the digital pin as an output.
  pinMode(led, OUTPUT);   
  Serial.begin(9600);  
}


void loop() {
  Serial.println("LED ON:");
  digitalWrite(led, HIGH);   
  delay(2000);
  Serial.println("LED OFF:");
  digitalWrite(led, LOW);    
  delay(2000);               
}

These are the things I got @AMPS...

Can we have a photo of YOUR board, or a link to the item you bought?

http://www.google.co.in/imgres?imgurl=http://www.forefront.io/attachments/uno.jpg&imgrefurl=http://www.forefront.io/a/beginners-guide-to-arduino&h=1244&w=1800&tbnid=PWcbodNC1MggTM:&zoom=1&docid=7sEPkgIxAOfihM&ei=UMH1VOWNI8qjugTc_4CwDg&tbm=isch&ved=0CDMQMygCMAI

This link shows the same front facing image of the board which I have...

This link shows the back facing image... @dannable

This error come due to bootloader crashed. Your bootloader might crashed due to several regions

before uploading bootloader make ensure

  1. you chosen right board & right port
  2. you havent connected any interface @ Tx & Rx lines
  3. if you above two condition are fine even you getting below error

avrdude stk500_getsync() not in sync

you need to upload the bootloader

you can upload bootloader using

this is useful if for future programming also. if you think cost is more

you just replace IC

I uploaded the bootloader keeping in mind all the three points you have given. It gets burned without showing any error message. But still the results are same, it's not working. Planning to go for a replacement of the IC. And Thanks for your immediate response Amen...

How you uploading bootloader??

You have AVR pocket programmer with you??

Please let me while uploading code which programmer you selected .send me screenshot where you get message boatload successfully uploaded.