Canon EOS SL1 Camera went "black"

I have an 18-month old Canon SL1 digital camera. I have used it quite a bit and am familiar with it. I was at an outside event today and took probably 100 pictures. Suddenly, it took a picture, then went totallydark. I took the following steps:

1) Took out the battery and reinserted it

2) Inserted a fresh battery

3) Took out and reinserted the memory card

4) Wait a while and tried all the steps above again.

It had been performing perfectly until now. It is as if if it is "unplugged - nothing works - nothing at all. Naturally, I'm 6 months past the end of warranty!!