1、首先在电脑左下角XP系统,点击开始,点击运行。
![](https://iknow-pic.cdn.bcebos.com/622762d0f703918f58352eab413d269758eec4ef?x-bce-process=image%2Fresize%2Cm_lfit%2Cw_600%2Ch_800%2Climit_1%2Fquality%2Cq_85%2Fformat%2Cf_auto)
2、然后在运行里输入regedit,按回车,如下图所示。
![](https://iknow-pic.cdn.bcebos.com/e4dde71190ef76c6f235e84a8d16fdfaae5167ef?x-bce-process=image%2Fresize%2Cm_lfit%2Cw_600%2Ch_800%2Climit_1%2Fquality%2Cq_85%2Fformat%2Cf_auto)
3、这时弹出注册表编辑器界面后,点击打开第一个HKEY CLASSES ROOT文件夹。
![](https://iknow-pic.cdn.bcebos.com/6d81800a19d8bc3ec6ef15ab928ba61ea9d345ef?x-bce-process=image%2Fresize%2Cm_lfit%2Cw_600%2Ch_800%2Climit_1%2Fquality%2Cq_85%2Fformat%2Cf_auto)
4、然后在打开的页面中,下拉文件,一直直到找到Installer文件夹。
![](https://iknow-pic.cdn.bcebos.com/7af40ad162d9f2d3a7f6378eb9ec8a136227cce8?x-bce-process=image%2Fresize%2Cm_lfit%2Cw_600%2Ch_800%2Climit_1%2Fquality%2Cq_85%2Fformat%2Cf_auto)
5、接着点开Installer文件夹,找到Products文件夹。
![](https://iknow-pic.cdn.bcebos.com/203fb80e7bec54e77c0a097fa9389b504ec26ae8?x-bce-process=image%2Fresize%2Cm_lfit%2Cw_600%2Ch_800%2Climit_1%2Fquality%2Cq_85%2Fformat%2Cf_auto)
6、点开Products文件夹,找到7D2F开头的文件夹,在文件夹中找到CAD对应版本的文件是不是原来安装的,然后将所有7D2F开头文件夹删除即可。
![](https://iknow-pic.cdn.bcebos.com/cc11728b4710b9125a27e59fd3fdfc03934522e8?x-bce-process=image%2Fresize%2Cm_lfit%2Cw_600%2Ch_800%2Climit_1%2Fquality%2Cq_85%2Fformat%2Cf_auto)
7、然后再继续安装一下CAD就可以了。
![](https://iknow-pic.cdn.bcebos.com/b219ebc4b74543a94afde9ad0e178a82b80114e8?x-bce-process=image%2Fresize%2Cm_lfit%2Cw_600%2Ch_800%2Climit_1%2Fquality%2Cq_85%2Fformat%2Cf_auto)