My aurdino is not responding!

Hi people,
I am totally new to aurdino. I have a UNO r3 board. To startup with I did a project of a bot which deviates on sencing obstacle. All of a sudden the arduino stopped, I tried resetting it but nothing happens. When given power source the power on LED, the default LED and the LED named TX keeps glowing and nothing else happens. When connected to Windows it is not even being senced but the same lights glow. It is like the Arduino is 'STUCK'.

Pleaseee help me troubleshoot.

When you power the board and/or reset it does the "default led" / L led blink?

No it dosen't, it stars glowing and nothing happens after that. It stays on untill the power to the board stops. Pushing the reset button gives no response too, the L Led dosent flicker.

Simple try you do. Just upload blink example

If you are getting below error means your bootloader got crashed. & once bootloader updated add watchdog time instruction to avoid further hanging process

avrdude stk500_getsync() not in sync

This is what I get!

"Sketch uses 1,030 bytes (3%) of program storage space. Maximum is 32,256 bytes.

Global variables use 9 bytes (0%) of dynamic memory, leaving 2,039 bytes for local variables. Maximum is 2,048 bytes.

avrdude: stk500_recv(): programmer is not responding

avrdude: stk500_getsync() attempt 1 of 10: not in sync: resp=0x02

avrdude: stk500_recv(): programmer is not responding

avrdude: stk500_getsync() attempt 2 of 10: not in sync: resp=0x02

avrdude: stk500_recv(): programmer is not responding

avrdude: stk500_getsync() attempt 3 of 10: not in sync: resp=0x02

Problem uploading to board. See http://www.arduino.cc/en/Guide/Troubleshooting#upload for suggestions.

avrdude: stk500_recv(): programmer is not responding

avrdude: stk500_getsync() attempt 4 of 10: not in sync: resp=0x02

avrdude: stk500_recv(): programmer is not responding

avrdude: stk500_getsync() attempt 5 of 10: not in sync: resp=0x02

avrdude: stk500_recv(): programmer is not responding

avrdude: stk500_getsync() attempt 6 of 10: not in sync: resp=0x02

avrdude: stk500_recv(): programmer is not responding

avrdude: stk500_getsync() attempt 7 of 10: not in sync: resp=0x02

avrdude: stk500_recv(): programmer is not responding

avrdude: stk500_getsync() attempt 8 of 10: not in sync: resp=0x02

avrdude: stk500_recv(): programmer is not responding

avrdude: stk500_getsync() attempt 9 of 10: not in sync: resp=0x02

avrdude: stk500_recv(): programmer is not responding

avrdude: stk500_getsync() attempt 10 of 10: not in sync: resp=0x02

This report would have more information with
"Show verbose output during compilation"
enabled in File > Preference."

But I think my arduino is not getting recognised because my arduino generally gets connected o COM5 but there is no COM5 in port settings.
So what do I do now?

As i said if errro occur means your bootloader got crashed need to update bootloader using AVR pocket programmer