Please can some one help me i am using a pro book 4515 for several of months now and it is always too hot ,literally Shuts down on its own like after 5 hours i cant even use it on my bed because i am afraid i will stop the fan blows What should i do ???Should i get a new fan ??I cant afford a new PC so that's out of the question it usually has a blue light when it gets very hot ,I am now using it mainly on the floor where there are ceramic tiles as it over heats less but its increasing and its worse please someone help.Why is there blue light and what is a real way to stop the overheating.