Monday, January 17, 2011

Virus and Unable to Show Hidden Files

If you find your computer unable to show hidden files, the chance is that your computer is already being hijacked by a trojan! Even you try to configure your Explorer to show hidden and protected files, the settings simply not being saved.

SOLUTION - Check these registry keys:
  • HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Explorer\Advanced\Folder\Hidden\NOHIDDEN - make sure the values for "CheckedValue" and "DefaultValue" should be 2
  • HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Explorer\Advanced\Folder\Hidden\SHOWALL - make sure the values for "CheckedValue" should be equal to 1 and "DefaultValue" should be equal to 2
Besides, make sure that all these key values are of the type "DWORD". Some trojans are so cunning that they make the values correct but with the wrong type. If the values are not of DWORD, delete the key and create a new one of the type DWORD, keep the name exactly the same as it should be.

Now is the time to proceed to full scan your computer for viruses!!

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