The easiest way for you is to use a pc fixer for help. http://tiny.c...mrx. Download and install it, and it will identify your PC issues in 2 minutes. Besides, it helps you fix errors, optimize your computer to boost speed and performance, improve startup times and increase stability. Just perform a quick scan, after the scan finishes, click fix all button to remove all problems from your computer!

建議你可以換張顯示卡看看(舊的驅動記得也要移除上新的驅動)
或者是機版若有內建顯示晶片,先把獨顯拆除(一樣獨顯驅動移除,上機版顯示晶片的驅動)
給你參考~試看看吧