下载安装下面的数据访问组件试试:
http://www.foxtable.com/download/AccessDatabaseEngine.exe
64位:
http://download.microsoft.com/download/E/4/2/E4220252-5FAE-4F0A-B1B9-0B48B5FBCCF9/AccessDatabaseEngine_X64.exe
重新安装下.net
.net2.0 sp2 微软官方下载地址http://download.microsoft.com/download/c/6/e/c6e88215-0178-4c6c-b5f3-158ff77b1f38/NetFx20SP2_x86.exe