Article ID: 933757 - View products that this article applies to.
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SYMPTOMS

Event ID 7000 or event ID 7026 is logged in the System logon a computer that is running one of the following operating systems:
  • Windows 7
  • Windows Server 2008 R2
  • Windows Vista
  • Windows Server 2008
This problem may occur if a device is not connected to the computer but the driver service of the device is enabled. For example, the following events are logged when the computer does not have a parallel port, a DVD drive, or a CD drive.

On a Windows 7-based or Windows Server 2008 R2-based computer

Source: Service Control Manager
Event ID: 7026
Description:
The following boot-start or system-start driver(s) failed to load:
cdrom


Source: Service Control Manager
Event ID: 7000
Description:
The Parallel port driver service failed to start due to the following error:
The service cannot be started, either because it is disabled or because it has no enabled devices associated with it.



On a Windows Vista-based or Windows Server 2008-based computer

Source: Service Control Manager Eventlog Provider
Event ID: 7026
Description:
The following boot-start or system-start driver(s) failed to load:
cdrom

Source: Service Control Manager Eventlog Provider
Event ID: 7000
Description:
The Parallel port driver service failed to start due to the following error:
The service cannot be started, either because it is disabled or because it has no enabled devices associated with it.

WORKAROUND

Important This article contains information about how to modify the registry. Make sure that you back up the registry before you modify it. Make sure that you know how to restore the registry if a problem occurs. For more information about how to back up, restore, and modify the registry, click the following article number to view the article in the Microsoft Knowledge Base:
322756 How to back up and restore the registry in Windows
To work around the problem that is described in the example in the “Symptoms” section, disable the Cdrom or Parport service in the registry to stop the errors from being logged.

To have us disable the Cdrom or Parport service in the registry for you, go to the "Fix it for me" section. If you prefer to fix this problem yourself, go to the "Let me fix it myself" section.

Fix it for me



To fix this problem automatically, click the Fix it button or link. In the File Download dialog box, click Run, and then follow the steps in the Fix it wizard.


Fix this problem
Microsoft Fix it 50656


Notes
  • This wizard may be in English only. However, the automatic fix also works for other language versions of Windows.
  • If you are not on the computer that has the problem, save the Fix it solution to a flash drive or a CD and then run it on the computer that has the problem.

Then, go to the "Did this fix the problem?" section.



Let me fix it myself

To do this, change the value of the following registry subkeys to 3 (Manual) or 4 (Disabled):
  • HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\cdrom

    Name: Start
    Type : REG_DWORD
    Data: 3 or 4
  • HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\parport

    Name: Start
    Type : REG_DWORD
    Data: 3 or 4
Note: If the above registry is changed to 4 (Disabled), the related device is not usable because a driver used in the device is not loaded. Therefore, if the device will be used in the future, the above registry should be set as 3 (Manual).

Did this fix the problem?

  • Check whether the problem is fixed. If the problem is fixed, you are finished with this section. If the problem is not fixed, you can contact support.
  • We would appreciate your feedback. To provide feedback or to report any issues with this solution, please leave a comment on the "Fix it for me" blog or send us an email.

REFERENCES

935497 Error message on a Windows Vista-based or Windows Server 2008-based computer that does not have a parallel port: "The Parallel port driver service failed to start"

Properties

Article ID: 933757 - Last Review: November 8, 2011 - Revision: 7.0
APPLIES TO
  • Windows 7 Enterprise
  • Windows 7 Home Basic
  • Windows 7 Home Premium
  • Windows 7 Professional
  • Windows 7 Ultimate
  • Windows Vista Business
  • Windows Vista Enterprise
  • Windows Vista Home Basic
  • Windows Vista Home Premium
  • Windows Vista Ultimate
  • Windows Server 2008 R2 Datacenter
  • Windows Server 2008 R2 Enterprise
  • Windows Server 2008 R2 Foundation
  • Windows Server 2008 R2 Standard
  • Windows Server 2008 Datacenter
  • Windows Server 2008 Enterprise
  • Windows Server 2008 Foundation
Keywords: 
kbharmony kbstartup kbregistry kbbug kbexpertiseinter kbexpertisebeginner kbtshoot kbfixme kbmsifixme KB933757

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