The computer on the left got a little too warm as you can probably tell.  Could this happen to your computer???  Maybe not quite as extreme, but yes, it certainly could if you don't provide the minimal routine maintenance any computer requires.  If you can't clean all the lint, dust, pet hairs, carpet fibers, etc. out of it on a routine schedule, then bring it to the shop, or let us know that you would like a reminder to have your computer professionally cleaned every 6 to 12 months.  It's a service that is fast, inexpensive and will protect your investment.  By inspection, our Techs can tell you how often this should be done.  We can even show you how to do it yourself if you would like...and promise to be careful of the internal components.

See the article on "How a computer is like a vacuum cleaner"