Overheated Will Not Turn Over

[jhoran1046]

BMW X5 4.4 2002 115,000 miles

I had a hose blow off when the weather was down to 7 degrees. I had replaced all the hoses last year except for the one I didn't see which goes from the water valve on the driver side wheel well to the back of the engine. It was running fine before the hose blew then the temperature gauge spiked all the way to red and the car stalled before I realized what had happened. It would not start back up after that and would just turn over. I had it towed back to my house and I am waiting for the new hose. I tried starting it again yesterday but the battery was dead from leaving the four ways on. I am just wondering if it would not start again because there is a temperature safety cut off to prevent you from running the engine if the temperature is too high or if it will not turn over because the head gasket is blown. I am getting the new hose tomorrow but I am worried that the head gaskets are blown which is what caused the hose to blow off in the first place. In any case my real question is: Is there a temperature cut off that prevents the car from starting when the engine is too hot.