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Defrag.exe can Not Start

JIMMY HEADRICK asked on March 19, 2013. Status: Answered & Closed.

Defrag.exe Will Not Start

» Defrag.exe will not start. When attempting to open defrag, a command prompt page flashes on the screen, too fast to read, then defrag fails to initiate. I run an Aspire M1800 64 bit 4gb Ram 1.6 gigs free space, ATI Radeon. The problem is simple, Defrag .exe will not open,

Best Answer

» The file Defrag.exe is located in the folder C:\Windows\System32. Known file sizes on Windows 7/XP are 25,088 bytes (75% of all occurrences) or 109,568 bytes. Defrag.exe is a Windows core system hidden file. Defrag.exe is able to record inputs, monitor applications and manipulate other programs. Therefore the technical security rating is 4% dangerous.

If Defrag.exe is located in a subfolder of "C:\Program Files", the security rating is 40% dangerous. The file size is 93,984 bytes. The program is not visible. Defrag.exe is not a Windows core file.

Disk Defrag.exe is an icon that loads a program in Windows called Disk Defragmenter. This program rearranges the data on your hard drive, allowing your computer to access it faster and generally speed up the performance of your machine. Typically, this icon is found under the Programs menu. If you have accidentally deleted the icon, you can restore it to its default location at any time.

Some malware(Trojan:Win32/Acbot.A) camouflages itself as Defrag.exe, particularly when located in the c:\windows or c:\windows\system32 folder. Therefore, you should check the Defrag.exe process on your PC to see if it is a threat.

In case of exe virus infection, the best way is to run a registry scan and clean registry, and then use DLL Suite to restore all the affected files; it supports free download of any important file required for repair.

YONKA PAUNOVA replied on March 25, 2013

All Answers:

  1. JOHN MORRISSEY replied on March 19, 2013: » You will need to open and elevated command prompt and then type defrag.exe

    To open and elevated command prompt if you're using Windows 7, follow the steps:a. Click Start.b. In the search box type cmdc. Right click and select Run as administrator.d. Type defrag.exe

  2. JIMMY HEADRICK replied on March 20, 2013: » I performed defrag overnight,using switches Cand M but I missed the switch for a report so I am not quite sure what it did.

    I am not comfortable with this important system tool not working as it should, from the GUI. I cut my teeth on DOS many years ago but I just did not think about using it on this occasion. I am wondering whether Microsoft has an article on all DOS commands, or can we use Ver 6 commands within Windows 7?

  3. JOHN MORRISSEY replied on March 21, 2013: » Method 1 You may run System File Checker tool to repair missing or corrupted system files.

    You can perform System file Checker from the link below.

    You may run Check Disk and let us know the status.

    Check a drive for errors.

    To know the exact cause of the issue, you may check event logs recorded in Event Viewer.

    What information appears in event logs (Event Viewer)?

  4. JIMMY HEADRICK replied on March 23, 2013: » Thank you JOHN MORRISSEY. I appreciate your assistance. I am sure iot has got to be something simple because I do not make a habit of 'playing' with settings I do not understand. Thanks again.

  5. JOHN MORRISSEY replied on March 24, 2013: » a.At an elevated command prompt, copy and then paste (or type) the following command, and then press ENTER:

    takeown /f Path_And_File_Name..

    For example, type takeown /f E:\windows\system32\jscript.dll.

    b.Copy and paste (or type) the following command, and then press ENTER to grant administrators full access to the file:

    icacls Path_And_File_Name /GRANT ADMINISTRATORS:F.

    For example, type icacls E:\windows\system32\jscript.dll /grant administrators:F.

    c.Copy and paste (or type the following command to replace the file with a known good copy of the file:

    Copy Path_And_File_Name_Of_Source_File Path_And_File_Name_Of_Destination.

    For example, type copy E:\temp\jscript.dll E:\windows\system32\jscript.dll. Check if the issue exists in a new user account.

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