Because of hardware fault my laptop is continuously pressing (sending) PrintScreen|SysRq. Thats why it is taking screens-shoots continuously.
I can not set any keyboard shortcut because it took printScreen button first. I solved the screen-shoots problem. But still it's sending the signal. I don't have any application depends on print button that's why i am using the system without any problem now. I want to block the signal so that i can set keyboard shortcut or similar problem. Thanks in advance.