If there's no response from any of the electric/electronic equipment, you may have a dead battery. You can check the battery with a multimeter (make sure you use the Volts range and connect the probes accordingly), you can also check it with a probe light or you can try to connect another car's battery with your battery using jumper cables (positive with positive, negative with negative) and see what happens. If the electric equipment starts working, don't try to start the engine for a couple of minutes to let your battery charge for a while. If there's still no response you may have blown fuses or fusible links.
Answers & Comments
Howdie is the security system on ? is your battery low ?
If there's no response from any of the electric/electronic equipment, you may have a dead battery. You can check the battery with a multimeter (make sure you use the Volts range and connect the probes accordingly), you can also check it with a probe light or you can try to connect another car's battery with your battery using jumper cables (positive with positive, negative with negative) and see what happens. If the electric equipment starts working, don't try to start the engine for a couple of minutes to let your battery charge for a while. If there's still no response you may have blown fuses or fusible links.