My 2009 15inch mac book pro cause over heating

Question

reacently am having huge problem on my 2009 mac book pro 15.4 inch, the machine battery got swallow and was replace,the hard disk got damage and was replace with seagate,the memory became default and also replace,the original isntallation disk got corrupted and a friend gave me his own for installation,after the installation the machine can takes longer time in booting and after booting it cause over heating,
    well what might cause the over heating and also slow in booting,thus hard to start on,my last option is to forward it to apple store for fixing excessieve heating and booting problems and general service as it is causeing me greatly
please forward solution and immediate service to
[email protected]
if no respond the machine will be forward to apple store for general service

Answer 1

Exactly what model MacBook Pro do you have?
Many MBP's have two graphic processors (gpu's) and if you are using the dedicated graphics processor, your MBP will heat up a lot  more than when the built-in graphics processor is in use.   For example, the current non-Retina MBP's have both a built-in Intel HD 4000 graphics processor and a dedicated NVIDIA GeForce GT 650M graphics processor.
You can control which video processor is in use via System Preferences > Energy Saver.  If you are running Lion (10.7) there is an option for Automatic Graphics Switching which you should turn off (disable) in order to use only the built-in video processor.  In my own experience I have found very few cases where the dedicated gpu gives 'better' performance than the built-in gpu.