Quick Solution

1. Click Start, click Run, type “regedit” and click OK.
2. Navigate to HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\services\cdrom\.
3. Double-click “Start” and change the value from 1 to 4.
4. Click OK and reboot the computer. The service cdrom will now not start at startup.

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.

Solution

To fix this behaviour, 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).