Lenovo H520g Desktop - Manual (Page 3)

Contents
Chapter 1. About this manual . . . . . . 1
Important safety information . . . . . . . . . . 1
Chapter 2. Safety information . . . . . . 3
General safety . . . . . . . . . . . . . . . . 3
Electrical safety . . . . . . . . . . . . . . . 3
Voltage-selection switch . . . . . . . . . . . . 5
Safety inspection guide . . . . . . . . . . . . 5
Handling electrostatic discharge-sensitive
devices
. . . . . . . . . . . . . . . . . . 6
Grounding requirements . . . . . . . . . . . . 6
Safety notices (multi-lingual translations) . . . . . 6
Chapter 3. General information . . . . 29
Specifications . . . . . . . . . . . . . . . 29
Lenovo Support Web site . . . . . . . . . . 30
Chapter 4. General checkout . . . . . 31
Problem determination tips . . . . . . . . . . 31
Chapter 5. Troubleshooting and
diagnostics . . . . . . . . . . . . . .
33
Basic troubleshooting . . . . . . . . . . . . 33
Accessing Control Panel on the Windows 8
operating system. . . . . . . . . . . . . .
34
Troubleshooting procedure . . . . . . . . . . 34
Troubleshooting . . . . . . . . . . . . . . 35
Audio problems . . . . . . . . . . . . 35
CD problems . . . . . . . . . . . . . 37
DVD problems . . . . . . . . . . . . . 38
Intermittent problems . . . . . . . . . . 39
Hard disk drive problems . . . . . . . . . 39
Keyboard, mouse, or pointing device
problems . . . . . . . . . . . . . . .
40
Monitor problems. . . . . . . . . . . . 42
Networking problems . . . . . . . . . . 43
Option problems . . . . . . . . . . . . 46
Performance and lockup problems . . . . . 47
Printer problems . . . . . . . . . . . . 49
Serial port problems. . . . . . . . . . . 49
Software problems . . . . . . . . . . . 50
USB problems . . . . . . . . . . . . . 51
Diagnostics . . . . . . . . . . . . . . . . 51
Lenovo Solution Center . . . . . . . . . 51
Chapter 6. Using the Setup Utility
program . . . . . . . . . . . . . . . .
53
Starting the Setup Utility program . . . . . . . 53
Viewing and changing settings . . . . . . . . 53
Using passwords. . . . . . . . . . . . . . 53
Password considerations . . . . . . . . . 54
Power-On Password . . . . . . . . . . 54
Administrator Password . . . . . . . . . 54
Hard Disk Password. . . . . . . . . . . 54
Setting, changing, and deleting a password . 54
Erasing lost or forgotten passwords (clearing
CMOS) . . . . . . . . . . . . . . . .
55
Enabling or disabling a device . . . . . . . . 55
Selecting a startup device . . . . . . . . . . 55
Selecting a temporary startup device . . . . 55
Selecting or changing the startup device
sequence . . . . . . . . . . . . . . .
56
Enabling ErP compliance mode . . . . . . . . 56
Changing the BIOS settings before installing a new
operating system. . . . . . . . . . . . . .
57
Exiting the Setup Utility program . . . . . . . 57
Chapter 7. Symptom-to-FRU index . . 59
Hard disk drive boot error . . . . . . . . . . 59
Power supply problems . . . . . . . . . . . 59
Beep symptoms . . . . . . . . . . . . . . 59
POST error codes . . . . . . . . . . . . . 60
Miscellaneous error messages . . . . . . . . 62
Undetermined problems . . . . . . . . . . . 63
Chapter 8. Locations . . . . . . . . . 65
Locations. . . . . . . . . . . . . . . . . 65
Locating connectors, controls, and indicators
on the front of your computer . . . . . . .
65
Locating connectors on the rear of your
computer . . . . . . . . . . . . . . .
66
Locating major FRUs and CRUs . . . . . . 66
Locating parts on the system board . . . . 68
Locating internal drives . . . . . . . . . 69
Chapter 9. Replacing FRUs . . . . . . 71
Handling static-sensitive devices . . . . . . . 71
Installing or replacing hardware . . . . . . . . 71
Removing the computer cover. . . . . . . 72
Removing and reinstalling the front bezel . . 73
Installing or replacing a PCI card . . . . . . 74
Replacing the battery . . . . . . . . . . 77
Installing or replacing a memory module . . . 78
Replacing the optical drive . . . . . . . . 80
Replacing the heat sink and fan assembly . . 82
Replacing the power supply assembly . . . 84
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