我从网上下载了个性鼠标，为什么一开机又变回原来的样子？

忽忽``~~~~我要分啊````~~~~~~``````~~`````````````你可以进QQ空间“借”嘛````````~~！`````````````````````很简单的哦：①就是打开QQ空间，再点[装扮空间]。②点开鼠标的列表```再右键单击查[属性]，把看见的网址[如拓展名为.ani或.cur的那些源码复制。[别以为你已经得到了源网址得，还有步骤的呦`````````~~~~~~~~]③把网址粘贴到IE栏上，把.pre改为.orig ```` 再把.gif或是.jpg改为.ani再回车
``````````回有要你下载的窗口，点保存到C盘的WINDOWS文件夹的Cursors目录下````````在控制面板的鼠标选项卡上换啊``````````````````````````````````````````````````````````````````````````````````一切OK拉`````````
[不要复制我的回答呀````]

在控制面版里 修改鼠标指针的属性,别忘了保存.

是否用过清理垃圾类软件清过系统？