Go here this should help bunches!
http://www.microsoft.com/security/online-privacy/safely-dispose-computers-and-devices.aspx
Hope this website helps!
Answer:
Never heard of that lol
<span>The answer is RAM. Chat messages are most likely to be found in the RAM of the computer. It is Random Access Memory. </span><span>RAM is considered volatile memory, which means that the stored information is lost when there is no more power.</span>