Open Device Manager.
View, Show Hidden Devices.
Uninstall all optical drives, CD, CD-RW, DVD, etc.
Uninstall all devices under Storage Volumes. Say no to any reboot prompts until you are finished. Also, if a Storage Volume doesn't uninstall, ignore it and move to the next one.
When this is done, reboot TWICE.
See if this sorts out the restarts.