Both memory stick bad? coinsidence or big problem


Jan 4, 2012
I had 2 stick of memory that I added to pc a few years ago well all of a sudden one day machine would not boot and smell burning and stick was extremely hot removed this one stick and machine booted fine 3 days later same issue with other stick which is in a different slot from the original... didnt boot and when removed booted up fine . What is left in the machine is the original 2 sticks of denominator memory that came with tha machine. I have order more memory but would like to know is this all possible to just go bad what should I check. I dont want to fry the new memory. my original memory has heat sinks on them the memory that went bad was crucial /n heat sinks. new memory will have heat dispersers on them. machine is hp blackbird 002 gaming machine.