Windows – System32 opens on startup

windows 7

I have Windows 7 x64 SP1 and when my OS started, Explorer with C:\Windows\system32 opens. What is it?

May it be a virus?

Best Answer

This Microsoft Help article is for other OS, but is likely to be relevant: System32 Folder Opens When Logging on to Windows XP, Windows 2000, or Windows NT 4.0

Symptom: When you log on to Microsoft Windows, a Microsoft Windows Explorer window may open that displays the contents of the System32 folder.

This behavior also occurs if there is a String value that contains only a single quote character (") as the Value data in the following Registry key: HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Run

Cause: This behavior can occur if a null, incomplete, or damaged entry exists in the registry.

Resolution: Use Registry Editor to view the following two Windows registry keys:

  • HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Run
  • HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Run

Verify that all the values in these keys do not contain any incorrect, incomplete, or null entries (such as "").