intel 945 processor pins bent and cpu not booting

i have an intel 945G mother board with dual core processor. My problem is that when i switched on the cpu it was displaying that cpu was shutdown due to overheating. I opened the cpu cover and cleaned the dust and all. I did all the necessary things and applie the heat sink paste. Then i tried again and was getting the same message. Then the cpu stopped booting. Then i had taken it to the service center and there i was told the there were a couple of bent procesr pins and it was fixed. I took it back and tried again. First of all every thing seems nice and running them again it stopped booting. I checkf the processor pins and found a couple of very slightly bend pins.i mean the row of pins is not even. A slight difference. What should i do. Please help me.