burning pins

[lerameur]

hello
I am using a pic to control some relays, the coils is activated with 12v supply . The pin output the 5v to the gate of mosfet which turns on the relay.
Also the problem is that pins from the LCD output are also burning, any idea why that is?
when the circuit is active and if I disconnect the 12v that goes to the coils, then there are few squares that appear in the LCD.. it goes away after a second or two..

ken