Pull the fuse.
i suggest u either get a new key or ignition
Bad electronic resistor / blower module - replace.
If you battery has plenty of power, either faulty contacts in ignition switch or starter motor, or faulty starter motor.
I am having similar symptoms with my 99 Buick Regal. The blower motor will run all the time even with the keys out. When the blower isn't working neither will the cruise control. I have researched it and believe it to be the ignition switch. I have not replaced it yet, but feel that is the most logical thing. It's also possible that in your situation it may be either the Blower Control Module or a relay. However, it's likely the ignition.
Shut it off. Either a switch or cut wire from battery
No gas Ridiculous...hoping that there is gas in your car...I would say either the starter or the ignition switch. When you get the car started, take it to autozone and let them do a free diagnostic on your alternator, battery, starter and ignition module.
Dead battery, defective ignition switch, blown main fuse, loose or corroded battery cable at either end.
Either the electrical flow between the battery and the switch is faulty or the connection between the switch and the blower is faulty. Could be an inline fuse.
You may have a fault somewhere in your wiring. Either your head unit isn't grounded to the car properly, or you have a connection break between either your HU and your battery, your HU and your ignition switch or your ignition switch and your battery. If you had a break between your ignition switch and battery you'd have serious issues. Check all fuses first, the 'radio' fuse is usually inside the car, and is usually 15A. If you can't find a break, your head unit may be faulty.
the ignition actuator is broken, you can turn off the "battery power" by the the ignition actuator rod that leads to the ignition switch, it runs along the top of the steering column under the dash, locate it and pull it towards the steering wheel, this should shut off the power. or you can unhook you battery, but either way you will have to replace the actuator.
Either the battery has a dead cell, which will require you to replace it, or something is on pulling power from the battery. Disconnect the negative cable and leave it off overnight. If the battery is dead the next morning the battery is defective. If not, then find out what is pulling power from the battery. Ignition switch may be defective.
If the battery is good and fully charged but the engine will not turn over then either the starter or the ignition switch is defective. Or you have a loose or corroded connection.