Why is there no bootable device?

Related questions

1. What causes Reboot and select proper boot device?
2. How does PXE booting work?
3. How does PXE boot work with DHCP?
4. What does it mean when there is no boot device available?
5. What does PXE boot do?
6. What is PXE boot Linux?
7. How does a PXE server work?
8. How does PXE boot work windows?
9. What ports does PXE boot use?
10. How do I start PXE over IPv4?

Tags

1. #other
2. #power
3. #drive
4. #button
5. #operating
6. #change
7. #bootable
8. #state
9. #solid
10. #system
11. #receive
12. #error
13. #detect
14. #sometimes
15. #device
16. #seconds
17. #caused
18. #settings
19. #computer