想知道自己的电脑用了很久后变慢的原因吗？？？有些人回重装系统来解决，现在就不用那么麻烦了，看完这本书就知道了，教你解决电脑变慢的难题-Would like to know their computer use for a long time after the slowing down of the reason? ? ? Some people back to reload the system to resolve, and now do not have enough troubles,