User Manual
Table Of Contents
- About this documentation
- Chapter 1. Meet your computer
- Chapter 2. Get started with your computer
- Chapter 3. Explore your computer
- Chapter 4. Secure your computer and information
- Chapter 5. UEFI BIOS
- What is UEFI BIOS
- Enter the BIOS menu
- Navigate in the BIOS interface
- Change the display language of UEFI BIOS
- Set the system date and time
- Change the startup sequence
- Enable or disable the configuration change detection feature
- Enable or disable the automatic power-on feature
- Enable or disable the smart power-on feature
- Enable or disable the ErP LPS compliance mode
- Change the ICE performance mode
- Change BIOS settings before installing a new operating system
- Update UEFI BIOS
- Recover from a BIOS update failure
- Clear CMOS
- Chapter 6. Troubleshooting, diagnostics, and recovery
- Chapter 7. CRU replacement
- Chapter 8. Help and support
- Appendix A. Important safety information
- Appendix B. Accessibility and ergonomic information
- Appendix C. Supplemental information about the Ubuntu operating system
- Appendix D. Compliance information
- Appendix E. Notices and trademarks
Restore system files and settings to an earlier
point . . . . . . . . . . . . . . . . . 44
Restore your files from a backup . . . . . . 44
Reset your computer . . . . . . . . . . . 44
Use advanced options . . . . . . . . . . 45
Windows automatic recovery. . . . . . . . 45
Create and use a recovery USB device . . . . 45
Update the device driver . . . . . . . . . 46
Chapter 7. CRU replacement . . . . . 47
What are CRUs . . . . . . . . . . . . . . . 47
Replace a CRU . . . . . . . . . . . . . . . 48
Computer stand . . . . . . . . . . . . . 48
Rear cover . . . . . . . . . . . . . . . 52
Optical drive . . . . . . . . . . . . . . 53
Optical drive holder . . . . . . . . . . . 56
System board shield . . . . . . . . . . . 58
VESA mount bracket cover . . . . . . . . 61
VESA mount bracket . . . . . . . . . . . 63
Storage drive and storage drive bracket . . . 65
M.2 solid-state drive . . . . . . . . . . . 70
Memory module . . . . . . . . . . . . . 74
Chapter 8. Help and support . . . . . 79
Self-help resources . . . . . . . . . . . . . 79
Call Lenovo . . . . . . . . . . . . . . . . 80
Before you contact Lenovo . . . . . . . . 80
Lenovo Customer Support Center . . . . . . 80
Purchase additional services. . . . . . . . . . 81
Appendix A. Important safety
information . . . . . . . . . . . . . . . 83
Appendix B. Accessibility and
ergonomic information . . . . . . . . 97
Appendix C. Supplemental
information about the Ubuntu operating
system . . . . . . . . . . . . . . . . . 101
Appendix D. Compliance
information . . . . . . . . . . . . . . . 103
Appendix E. Notices and
trademarks . . . . . . . . . . . . . . . 113
ii M70a and M90a User Guide