Hello Fausto-Borg,
Please refer to this article for some trouble shooting steps to help resolve the issue with the printer rebooting. If you are still having issues after trying these steps, I suggest that you call into our support department for assistance @ 1-800-821-2797.
My new C235 is frequently rebooting and in some occasions it is even not able to finish the reboot and it is stuck.
I'm using the latest driver.
Any comments / suggestions?