Bought this computer of the internet from a man who claimed to be a knowledgeable computer technician, what I received was far from a gaming computer which was my intended purchase. since then I have put over 300 dollars into this computer. it still is not running at the capacity I believe it should be at. I have put in a Graphics card, and a new power source, my last resort would be change out the motherboard, leaving me with an expensive shell. Thoughts on which motherboard to buy or even another route to take, I Spent $275 on the original computer which he claimed was valued at $450 +, since then the initial 300, the computer has been an investment for the past 3 months, I don't want to spend more then $200 in the final operations of this disaster, what course of action would you recommend?