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, and after reading this book will know, and teach you to solve slow computer problems