I recently purchased a refurbished HP Envy 15 Model: 15-1066nr. I want to upgrade the RAM (currently have 6GB). Guides say 4 slots but I only see 2 w/out completely taking it apart. Also would like to replace the HD with a great SSD around 500GB. Also I cannot find a replacement/higher capacity battery (it came with a 6-cell). Finally this "beast" gets hot very fast. The fan is loud, but not to the point where its unbearable. Thing is it's only on for a certain amount of time. Is it possible to override this feature and make it so have the fan continuously run at a higher speed. Thank you all.