This morning my security alarm went off I went out to turn it off. A hour later i went to start my car it only turned over but didn't start i disconnected the battery now it wont even turn over

Thanks for choosing FIxYa and welcome to the site. Your alarm can cause the car to not start, as you know now. It will need reset. If you have your owner manual, the information should be there. If not, you may want to call the dealership to get the code. You will need all your vehicle information to do so. Since it is not cranking now, make sure the battery terminals are cleaned and connected tight. Check your ignition fuse, just in case it blew. The security system may have shut the starting circuit down, but I am not for sure. I wouldn't think it would. Make sure the battery is charged correctly. Constant cranking with lights on may have made it weak. It only charges when it is running. If you have any other questions, feel free to ask. Thanks for using FIxYa.