A router boots and enters setup mode. What is the reason for this? Posted on January 13, 2019 by Admin Leave a comment A router boots and enters setup mode. What is the reason for this? The IOS image is corrupt. Cisco IOS is missing from flash memory. The configuration file is missing from NVRAM. The POST process has detected hardware failure. For All Questions: CCNA1 ITN Chapter 6 Exam Answers 2019 Leave a comment Cancel replyYou must be logged in to post a comment.