Please help me out

Development Tools IDE 1.x
1

avrdude: stk500v2_getsync(): can't communicate with device: resp=0x01
this message is showing up whenever i am uploadind any programme even 'blink programme'. Please help me out

2

Start here

3

what arduino do you have.
what is your os?
what is yout bit witdh? (32bit/64bit)

without these we can't help you

this is a tut on how to test you arduino UNO/MEGA

step 1: do a loopback test: Loop-Back Test Instructions - IDE 1.x - Arduino Forum
step 2: if step 1 fails then go to step 3, if it didn't fail pls go to step 4
step 3: reprogramm the programm of the atmega16u2 (and not the bootloader of the atmega328)(google it) and return to step1.
step 4: if loopback test worked: upload the blink program included in the arduino IDE, if this works pls go to step 6, ifnot step 5.
step 5: burn the bootloader of the atmega328 (Installing an Arduino Bootloader - SparkFun Learn) go to step 4
step 6: you now have a working arduino again

if you would end up in an endles loop, don't continue pls :smiley: then probably