you need new PC, Because your CPU and Graphic card is bad
Intel Core i3-2100 - Intel Core i5-2500k - Intel Core i7-2600K - Intel Core i7-3770K
$121.98 - $216.99 - $294.81 - $339.99 this best CPU
GTX 550 or GTX 560 or GTX 570 or GTX 580 or GTX 590
$149.99 - $184.99 - $279.99 - $569.84 - 995.99$ this best Graphic card on the world