What causes Reboot and select proper boot device?

Related questions

1. How do I fix ASUS reboot and select proper boot device?
2. What port does PXE boot use?
3. How does PXE booting work?
4. What is PXE client?
5. What does it mean when there is no boot device available?
6. What is Winpe bootable disk?
7. How do I start PXE over IPv4?
8. What causes no bootable device error?
9. What is PXE boot used for?
10. How does a PXE server work?

Tags

1. #computer
2. #device
3. #files
4. #cases
5. #insert
6. #either
7. #system
8. #nowhere
9. #media
10. #which
11. #shows
12. #error
13. #hardware
14. #mucking
15. #caused
16. #select
17. #order
18. #reboot
19. #failing
20. #corruption
21. #faulty
22. #proper
23. #reads
24. #drive
25. #failed