I just got a raspberry pi in the mail from element 14. Its a model B. I also bought this SD Card to boot from. When I first put in my SD Card and plugged in my power the PWR led turned bright red, then the green ACT light flickered. Then after a few seconds the PWR led would remain constantly red while all of the other leds would remain dark. After several attempts I believed that my SD Card was defective. So I did this. When that finished I put the SD card in the SD slot and then plugged in my power. Nothing changed. What am I doing wrong?