win7安装CAD出现1606错误怎么办？小编这里有个比较简单的方案，如果你还在烦恼找不到解决方法，看下win7安装CAD出现错误操作步骤吧。
         1、首先在桌面的空白处鼠标右击选择“新建--文本文档”选项;

　　2、然后将以下内容复制到记事本里面，

　　Windows Registry Editor Version 5.00

　　[HKEY_CURRENT_USERSoftwareMicrosoftWindowsCurrentVersionExplorerShell Folders]

　　"!Do not use this registry key"="Use the SHGetFolderPath or SHGetKnownFolderPath function instead"

　　"AppData"=hex(2):25,00,55,00,53,00,45,00,52,00,50,00,52,00,4f,00,46,00,49,00,

　　4c,00,45,00,25,00,5c,00,41,00,70,00,70,00,44,00,61,00,74,00,61,00,5c,00,52,

　　00,6f,00,61,00,6d,00,69,00,6e,00,67,00,00,00

　　"Cache"=hex(2):25,00,55,00,53,00,45,00,52,00,50,00,52,00,4f,00,46,00,49,00,4c,

　　00,45,00,25,00,5c,00,41,00,70,00,70,00,44,00,61,00,74,00,61,00,5c,00,4c,00,

　　6f,00,63,00,61,00,6c,00,5c,00,4d,00,69,00,63,00,72,00,6f,00,73,00,6f,00,66,

　　00,74,00,5c,00,57,00,69,00,6e,00,64,00,6f,00,77,00,73,00,5c,00,54,00,65,00,

　　6d,00,70,00,6f,00,72,00,61,00,72,00,79,00,20,00,49,00,6e,00,74,00,65,00,72,

　　00,6e,00,65,00,74,00,20,00,46,00,69,00,6c,00,65,00,73,00,00,00

　　"Cookies"=hex(2):25,00,55,00,53,00,45,00,52,00,50,00,52,00,4f,00,46,00,49,00,

　　4c,00,45,00,25,00,5c,00,41,00,70,00,70,00,44,00,61,00,74,00,61,00,5c,00,52,

　　00,6f,00,61,00,6d,00,69,00,6e,00,67,00,5c,00,4d,00,69,00,63,00,72,00,6f,00,

　　73,00,6f,00,66,00,74,00,5c,00,57,00,69,00,6e,00,64,00,6f,00,77,00,73,00,5c,

　　00,43,00,6f,00,6f,00,6b,00,69,00,65,00,73,00,00,00

　　"Desktop"=hex(2):25,00,55,00,53,00,45,00,52,00,50,00,52,00,4f,00,46,00,49,00,

　　4c,00,45,00,25,00,5c,00,44,00,65,00,73,00,6b,00,74,00,6f,00,70,00,00,00

　　"Favorites"=hex(2):25,00,55,00,53,00,45,00,52,00,50,00,52,00,4f,00,46,00,49,00,

　　4c,00,45,00,25,00,5c,00,46,00,61,00,76,00,6f,00,72,00,69,00,74,00,65,00,73,

　　00,00,00

　　"History"=hex(2):25,00,55,00,53,00,45,00,52,00,50,00,52,00,4f,00,46,00,49,00,

　　4c,00,45,00,25,00,5c,00,41,00,70,00,70,00,44,00,61,00,74,00,61,00,5c,00,4c,

　　00,6f,00,63,00,61,00,6c,00,5c,00,4d,00,69,00,63,00,72,00,6f,00,73,00,6f,00,

　　66,00,74,00,5c,00,57,00,69,00,6e,00,64,00,6f,00,77,00,73,00,5c,00,48,00,69,

　　00,73,00,74,00,6f,00,72,00,79,00,00,00

　　"Local AppData"=hex(2):25,00,55,00,53,00,45,00,52,00,50,00,52,00,4f,00,46,00,

　　49,00,4c,00,45,00,25,00,5c,00,41,00,70,00,70,00,44,00,61,00,74,00,61,00,5c,

　　00,4c,00,6f,00,63,00,61,00,6c,00,00,00

　　"My Pictures"=hex(2):25,00,55,00,53,00,45,00,52,00,50,00,52,00,4f,00,46,00,49,

　　00,4c,00,45,00,25,00,5c,00,50,00,69,00,63,00,74,00,75,00,72,00,65,00,73,00,

　　00,00

　　"My Music"=hex(2):25,00,55,00,53,00,45,00,52,00,50,00,52,00,4f,00,46,00,49,00,

　　4c,00,45,00,25,00,5c,00,4d,00,75,00,73,00,69,00,63,00,00,00

　　"My Video"=hex(2):25,00,55,00,53,00,45,00,52,00,50,00,52,00,4f,00,46,00,49,00,

　　4c,00,45,00,25,00,5c,00,56,00,69,00,64,00,65,00,6f,00,73,00,00,00

　　"{374DE290-123F-4565-9164-39C4925E467B}"=hex(2):25,00,55,00,53,00,45,00,52,00,

　　50,00,52,00,4f,00,46,00,49,00,4c,00,45,00,25,00,5c,00,44,00,6f,00,77,00,6e,

　　00,6c,00,6f,00,61,00,64,00,73,00,00,00

　　"NetHood"=hex(2):25,00,55,00,53,00,45,00,52,00,50,00,52,00,4f,00,46,00,49,00,

　　4c,00,45,00,25,00,5c,00,41,00,70,00,70,00,44,00,61,00,74,00,61,00,5c,00,52,

　　00,6f,00,61,00,6d,00,69,00,6e,00,67,00,5c,00,4d,00,69,00,63,00,72,00,6f,00,

　　73,00,6f,00,66,00,74,00,5c,00,57,00,69,00,6e,00,64,00,6f,00,77,00,73,00,5c,

　　00,4e,00,65,00,74,00,77,00,6f,00,72,00,6b,00,20,00,53,00,68,00,6f,00,72,00,

　　74,00,63,00,75,00,74,00,73,00,00,00

　　"Personal"=hex(2):25,00,55,00,53,00,45,00,52,00,50,00,52,00,4f,00,46,00,49,00,

　　4c,00,45,00,25,00,5c,00,44,00,6f,00,63,00,75,00,6d,00,65,00,6e,00,74,00,73,

　　00,00,00

　　"PrintHood"=hex(2):25,00,55,00,53,00,45,00,52,00,50,00,52,00,4f,00,46,00,49,00,

　　4c,00,45,00,25,00,5c,00,41,00,70,00,70,00,44,00,61,00,74,00,61,00,5c,00,52,

　　00,6f,00,61,00,6d,00,69,00,6e,00,67,00,5c,00,4d,00,69,00,63,00,72,00,6f,00,

　　73,00,6f,00,66,00,74,00,5c,00,57,00,69,00,6e,00,64,00,6f,00,77,00,73,00,5c,

　　00,50,00,72,00,69,00,6e,00,74,00,65,00,72,00,20,00,53,00,68,00,6f,00,72,00,

　　74,00,63,00,75,00,74,00,73,00,00,00

　　"Programs"=hex(2):25,00,55,00,53,00,45,00,52,00,50,00,52,00,4f,00,46,00,49,00,

　　4c,00,45,00,25,00,5c,00,41,00,70,00,70,00,44,00,61,00,74,00,61,00,5c,00,52,

　　00,6f,00,61,00,6d,00,69,00,6e,00,67,00,5c,00,4d,00,69,00,63,00,72,00,6f,00,

　　73,00,6f,00,66,00,74,00,5c,00,57,00,69,00,6e,00,64,00,6f,00,77,00,73,00,5c,

　　00,53,00,74,00,61,00,72,00,74,00,20,00,4d,00,65,00,6e,00,75,00,5c,00,50,00,

　　72,00,6f,00,67,00,72,00,61,00,6d,00,73,00,00,00

　　"Recent"=hex(2):25,00,55,00,53,00,45,00,52,00,50,00,52,00,4f,00,46,00,49,00,4c,

　　00,45,00,25,00,5c,00,41,00,70,00,70,00,44,00,61,00,74,00,61,00,5c,00,52,00,

　　6f,00,61,00,6d,00,69,00,6e,00,67,00,5c,00,4d,00,69,00,63,00,72,00,6f,00,73,

　　00,6f,00,66,00,74,00,5c,00,57,00,69,00,6e,00,64,00,6f,00,77,00,73,00,5c,00,

　　52,00,65,00,63,00,65,00,6e,00,74,00,00,00

　　"SendTo"=hex(2):25,00,55,00,53,00,45,00,52,00,50,00,52,00,4f,00,46,00,49,00,4c,

　　00,45,00,25,00,5c,00,41,00,70,00,70,00,44,00,61,00,74,00,61,00,5c,00,52,00,

　　6f,00,61,00,6d,00,69,00,6e,00,67,00,5c,00,4d,00,69,00,63,00,72,00,6f,00,73,

　　00,6f,00,66,00,74,00,5c,00,57,00,69,00,6e,00,64,00,6f,00,77,00,73,00,5c,00,

　　53,00,65,00,6e,00,64,00,54,00,6f,00,00,00

　　"Start Menu"=hex(2):25,00,55,00,53,00,45,00,52,00,50,00,52,00,4f,00,46,00,49,

　　00,4c,00,45,00,25,00,5c,00,41,00,70,00,70,00,44,00,61,00,74,00,61,00,5c,00,

　　52,00,6f,00,61,00,6d,00,69,00,6e,00,67,00,5c,00,4d,00,69,00,63,00,72,00,6f,

　　00,73,00,6f,00,66,00,74,00,5c,00,57,00,69,00,6e,00,64,00,6f,00,77,00,73,00,

　　5c,00,53,00,74,00,61,00,72,00,74,00,20,00,4d,00,65,00,6e,00,75,00,00,00

　　"Startup"=hex(2):25,00,55,00,53,00,45,00,52,00,50,00,52,00,4f,00,46,00,49,00,

　　4c,00,45,00,25,00,5c,00,41,00,70,00,70,00,44,00,61,00,74,00,61,00,5c,00,52,

　　00,6f,00,61,00,6d,00,69,00,6e,00,67,00,5c,00,4d,00,69,00,63,00,72,00,6f,00,

　　73,00,6f,00,66,00,74,00,5c,00,57,00,69,00,6e,00,64,00,6f,00,77,00,73,00,5c,

　　00,53,00,74,00,61,00,72,00,74,00,20,00,4d,00,65,00,6e,00,75,00,5c,00,50,00,

　　72,00,6f,00,67,00,72,00,61,00,6d,00,73,00,5c,00,53,00,74,00,61,00,72,00,74,

　　00,75,00,70,00,00,00

　　"Templates"=hex(2):25,00,55,00,53,00,45,00,52,00,50,00,52,00,4f,00,46,00,49,00,

　　4c,00,45,00,25,00,5c,00,41,00,70,00,70,00,44,00,61,00,74,00,61,00,5c,00,52,

　　00,6f,00,61,00,6d,00,69,00,6e,00,67,00,5c,00,4d,00,69,00,63,00,72,00,6f,00,

　　73,00,6f,00,66,00,74,00,5c,00,57,00,69,00,6e,00,64,00,6f,00,77,00,73,00,5c,

　　00,54,00,65,00,6d,00,70,00,6c,00,61,00,74,00,65,00,73,00,00,00

　　"CD Burning"=hex(2):25,00,55,00,53,00,45,00,52,00,50,00,52,00,4f,00,46,00,49,

　　00,4c,00,45,00,25,00,5c,00,41,00,70,00,70,00,44,00,61,00,74,00,61,00,5c,00,

　　4c,00,6f,00,63,00,61,00,6c,00,5c,00,4d,00,69,00,63,00,72,00,6f,00,73,00,6f,

　　00,66,00,74,00,5c,00,57,00,69,00,6e,00,64,00,6f,00,77,00,73,00,5c,00,42,00,

　　75,00,72,00,6e,00,5c,00,42,00,75,00,72,00,6e,00,00,00

　　"Fonts"=hex(2):25,00,77,00,69,00,6e,00,64,00,69,00,72,00,25,00,5c,00,46,00,6f,

　　00,6e,00,74,00,73,00,00,00

　　3、复制粘贴完成之后将文件另存为 *.reg格式，保存之后双击导入注册表，然后安装CAD软件即可，就不会再发现错误了。