Hello, here is my first question at thescripts.com :) Experts please help me

I use the following code to dial the bluetooth phone modem connected to my Laptop via serial port. The code dials the phone number well but after the sleep, it disconnects("AT H") resulting in the system crashes with the blue screen of death showing the following error:
IRQL_NOT_LESS_T HAN_OR_EQUAL

I think the problem with the...