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LCD and AVR kit

Hello,

I am doing my own AVR kit. I connected LCD 8x2 on port A and B (RS - PA1; R/W - PB4; E - PA0; DB4-7 - PB0-3) . When LCD is not in the circuit nothing work like power supply is off. When LCD is in the circuit everything run. Connect and disconnect LCD is one of the important part of this kit.

 

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Not enough information.

Your circuit above looks fine but according to your description the problem is not this circuit but the rest of your circuit.

Please post the schematics for the rest of your circuit.