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Whenever I start up my PC (running Windows 8.1) I am able to see three windows of running reg.exe program for a flash of a second. Some times they are visible for a longer duration and that was when I was able to get the below screenshot.

enter image description here

From this link I gather that reg.exe is a command-line utility with same features as regedit.exe.

In my Task Manager's Startup tab I can see Registry Console Tool enabled with three entries.

enter image description here

How can I check why reg.exe starts up at boot time? Will disabling these processes will have adverse effects on my PC?

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Are you able to disable it? This normally happens when a malicious infection exists on your system. –  Ramhound Jan 27 at 18:17
    
Use AutoRuns to see more details: technet.microsoft.com/en-US/sysinternals/bb963902.aspx –  magicandre1981 Jan 27 at 19:23

1 Answer 1

The manual way

To find out what they do, I recommend you take a look at the Run-location in the registry, located at:

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

    or...

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

    or...

  • HKEY_LOCAL_MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows\CurrentVersion\Run

It's a bit strange that you have three startup items for reg.exe, so I'd check out the registry keys and see what parameters the instances for reg.exe have.

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In both cases I could not find the entry for reg.exe in my registry. –  Naveen Jan 28 at 17:56
    
@Naveen Sorry, I forgot another location! I updated my answer. –  Thor Jan 28 at 18:59
    
Searched your new location, but still could not find any mention. –  Naveen Jan 29 at 2:38
    
@Naveen In that case, you should use AutoRuns per magicandre1981's comment, downloadable from here: technet.microsoft.com/en-US/sysinternals/bb963902.aspx –  Thor Jan 29 at 9:20

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