Lenovo 90AT Manuals

Manuals and User Guides for Lenovo 90AT. We have 1 Lenovo 90AT manual available for free PDF download: Hardware Maintenance Manual

Lenovo 90AT Hardware Maintenance Manual

Lenovo 90AT Hardware Maintenance Manual (108 pages)

Brand: Lenovo | Category: Desktop | Size: 5.35 MB

Table of Contents

Table of Contents
3
Chapter 1. About this Manual

5
- Important Safety Information
  5
Chapter 2. Safety Information

7
Chapter 3. General Information

33
Chapter 4. General Checkout

35
- Problem Determination Tips
  35
Chapter 5. Troubleshooting and Diagnostics

37
- Basic Troubleshooting
  37
- Accessing Control Panel on the Windows 8.1 Operating System
  38
- Troubleshooting Procedure
  38
- Troubleshooting
  39
- Audio Problems
  39
- CD Problems
  41
- DVD Problems
  42
- Intermittent Problems
  43
- Hard Disk Drive Problems
  43
- Keyboard, Mouse, or Pointing Device Problems
  44
- Monitor Problems
  46
- Networking Problems
  47
- Option Problems
  50
- Performance and Lockup Problems
  51
- Printer Problems
  53
- Serial Port Problems
  53
- Software Problems
  54
- USB Problems
  55
- Diagnostics
  55
- Lenovo Solution Center
  55
Chapter 6. Using the Setup Utility Program

57
Chapter 7. Symptom-To-FRU Index

63
- Hard Disk Drive Boot Error
  63
- Power Supply Problems
  63
- Beep Symptoms
  63
- POST Error Codes
  64
- Miscellaneous Error Messages
  66
- Undetermined Problems
  67
Chapter 8. Locations

69
Chapter 9. Replacing Frus

75
Chapter 10. Additional Service Information

99
- Security Features
  99
- Hardware-Controlled Passwords
  99
- Operating System Password
  99
- Vital Product Data
  99
- BIOS Levels
  99
- Flash Update Procedures
  99
- Updating (Flashing) the BIOS from a Disc
  100
- Updating (Flashing) the BIOS from Your Operating System
  101
- Recovering from a POST and BIOS Update Failure
  101
- Power Management
  102
- Advanced Configuration and Power Interface (ACPI) BIOS
  102
- Automatic Power-On Features
  102
Appendix A. Notices

103
- Television Output Notice
  104
- European Conformance CE Mark
  104
- Trademarks
  104
- Index
  105

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