Maybe it's an incompatible problem! ! If your CPU is high! ! Memory is 5 12MB! The memory just exploded! And then cause a shutdown! (this is still humanized, maybe it will be burned once! ) there is also some software that can't be turned on. I suggest you change a 320G hard disk, only a few hundred! 320G is rarely sold, and 500G is still a lot! The last one is not good! And I will go back to Nantian soon! Humidity is inevitable! I hope I can help you!