Computer almost died

Odd thing happened. It all started when I installed some software to rip vcd, then I was about to watch smallville and terminal service back to my main machine. So to do that I had to disable the firewall that comes with the mobo. To my surprise my computer just blue screen and refuse to start after that. I even tried a few more tries with the power being un plugged.
In the end I had to turn the firewall back on. Something is odd.