What causes no bootable device error?

Related questions

1. What does it mean when there is no boot device available?
2. Why does my computer say no boot device available?
3. What is PXE boot used for?
4. How does a PXE server work?
5. What causes Reboot and select proper boot device?
6. Why is there no bootable device?
7. What port does PXE boot use?
8. What does start PXE over ipv4 mean?
9. What is PXE client?
10. What does PXE boot do?

Tags

1. #errors
2. #available
3. #system
4. #changed
5. #check
6. #issue
7. #solution
8. #normally
9. #caused
10. #settings
11. #matter
12. #damaged
13. #operating
14. #doesn
15. #bootable
16. #files
17. #might
18. #device
19. #cause
20. #configuration
21. #folders