You may be face Event 7026 on your Windows systems and as this Event shows that "The following boot-start or system-start driver(s) failed to load: cdrom", you may be wonder that why it is happening while system don't have any CDROM connected with it. In my scenario, I start explore and comes to know that in registry, cdrom service is set to 1 that indicate that it is a system / boot type device.
Normally this error / Event ID indicates that there were priviously a CDROM was installed and now Physical Drive is no more connected but its services is up and running.
You simple need to disable or set to manual cdrom in registry as under;
- Click on Start > RUN > Type regedit and Press Enter
- Navigate to HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\cdrom
- Find Subkey Name Start Type REG_DWORD
- Set its Data Type to 3 (Manual ) or 4 ( Disable )