Oh no MY PC and Laptop Crash !!!!!!!

I have not been posting for quite a while but it could be explained. My Pc and laptop both crash when I was testing some code on my two computer. I was testing some code using a bundle of codes using DirectPlay from Directx 9.0. I should pay more attention to my computers from now on..... One is a rescued Pc(pentium 3) with really good ram that was thrown by someone while they are springcleaning during the Chinese New Year. Another is a laptop that is a display set in a major retail outlets but still can be considered a new buy.