以前种过病毒，病毒被清除干净了，但是隐藏的文件没有恢复。

也就是文件夹选项中总是在不显示隐藏的文件夹前面打钩,怎样也没法改？
 

那就只有修改注册表了

如下：

新建一个文本文档，复制下面的内容，然后把扩展名改成.reg

REGEDIT4

[HKEY_LOCAL_MACHINE\Software\Microsoft\Windows\CurrentVersion\explorer\Advanced\Folder\Hidden]

"Text"="隐藏文件"

"Type"="group"

"Bitmap"="C:\\WINDOWS\\SYSTEM\\SHDOC401.DLL,4"

"HelpID"="update.hlp#51131"

[HKEY_LOCAL_MACHINE\Software\Microsoft\Windows\CurrentVersion\explorer\Advanced\Folder\Hidden\SHOWALL]

"RegPath"="Software\\Microsoft\\Windows\\CurrentVersion\\Explorer\\Advanced"

"Text"="显示所有文件"

"Type"="radio"

"CheckedValue"=dword:00000001

"ValueName"="Hidden"

"DefaultValue"=dword:00000000

"HKeyRoot"=dword:80000001

"HelpID"="update.hlp#51105"

[HKEY_LOCAL_MACHINE\Software\Microsoft\Windows\CurrentVersion\explorer\Advanced\Folder\Hidden\NOHIDDEN]

"RegPath"="Software\\Microsoft\\Windows\\CurrentVersion\\Explorer\\Advanced"

"Text"="不显示隐藏文件"

"Type"="radio"

"CheckedValue"=dword:00000002

"ValueName"="Hidden"

"DefaultValue"=dword:00000000

"HKeyRoot"=dword:80000001

"HelpID"="update.hlp#51104"

[HKEY_LOCAL_MACHINE\Software\Microsoft\Windows\CurrentVersion\explorer\Advanced\Folder\Hidden\NOHIDORSYS]

"RegPath"="Software\\Microsoft\\Windows\\CurrentVersion\\Explorer\\Advanced"

"Text"="不显示隐藏文件或系统文件"

"Type"="radio"

"CheckedValue"=dword:00000000

"ValueName"="Hidden"

"DefaultValue"=dword:00000000

"HKeyRoot"=dword:80000001

"HelpID"="update.hlp#51103"