Why some of my keyboard keys are not working?

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Tags

1. #issues
2. #mechanical
3. #functioning
4. #needs
5. #however
6. #those
7. #fixed
8. #following
9. #their
10. #usually
11. #common
12. #causes
13. #contain
14. #remedy
15. #problems
16. #failure
17. #sections
18. #sometimes
19. #methods
20. #keyboard
21. #replaced