My oven

Question

Hi, I appreciate any assistance you can send my way. I live in a trailer and I have a Magic Chef stove top/oven. The stove top works fine but when I light the oven it only stays lit for 10-15 minutes and goes out. What can I do to fix it? Also, I have a phillips head stuck in my Makita 9100 cordless drill. How do I remove it?