说明：  这是一篇介绍Windows系统上User Mode程序的排错方法和技巧的文章。无论是开发、测试还是支持，都会遇上程序运行结果跟预期效果不一致的情况。找到问题根源和解决的过程，就是排错。同时，如果问题发生的情况很特殊，比如特别难于重现，或者没有源代码可以参考，在这样的情况下解决问题，非常有挑战性。
(The process is debugging. At the same time, if the problem happened very special, such as particularly difficult to reproduce, there is no source code or can refer, in such circumstances to solve the problem, very challenging.)