1996 Olds 98

I have a 1996 Oldsmobile 98 and it runs great. I stopped for a hamburger yesterday and now it will not start and the Security light is flashing on the dash. I read the manual and did everything asked but neither key will work. All lights and features are working and I can take the car out of gear but the Security light flashes and will not start. No sound is made at all. Any ideas. It had to be towed home.

Welcome to AF. Try another key if possible or leave the key on for 15 minutes, turn it off and try and restart.