PIC voltage suddenly DROP~~why????

YOo... Big problem.... i doing my project.... my PIC is input pin is connected with a receiver module..... both using same supply... problem is

when one buttons is pressed, receiver got the signal(my piC is in off condition) .. once i turn on my pic at the same time.. the signal at receiver immediatly drop to zero volts..... so i cannot get the input from transmittor to activate my PIC.. pls pls.. why ya?????????????

No cross posting! This is against the rules and makes a mess of the board.

Please answer this on the thread on the Microcontroller section.