Contents

Chapter 1. About this manual	.	1
Important safety information	.	1
Chapter 2. Safety information	.	3
General safety	.	3
Electrical safety	.	3
Safety inspection guide	.	5
Handling electrostatic discharge-sensitive
devices	.	5
Grounding requirements	.	6
Safety notices (multi-lingual translations) . . . .	.	6
Chapter 3. General information . . . .		29
Specifications		29
Lenovo programs		29
Accessing Lenovo programs on the Windows
7 operating system		30
Accessing Lenovo programs on the Windows
8 or Windows 8.1 operating system . . . .		31
Lenovo Support Web site		31
Chapter 4. General checkout		33
Problem determination tips		33
Chapter 5. Troubleshooting and
diagnostics		35
Basic troubleshooting		35
Accessing Control Panel on the Windows 8 or
Windows 8.1 operating system		36
Troubleshooting procedure		36
Troubleshooting		37
Audio problems		37
CD problems		39
DVD problems		40
Intermittent problems		41
Hard disk drive problems		41
Keyboard, mouse, or pointing device
problems		42
Monitor problems		44
Networking problems		46
Option problems		48
Performance and lockup problems		49
Printer problems		51
Serial port problems		51
Software problems		52
USB problems		53
Diagnostics		53
Lenovo Solution Center		54

Chapter 6. Using the Setup Utility
program	55
Starting the Setup Utility program	55
Viewing and changing settings	55
Using passwords	55
Password considerations	56
Power-on password	56
Administrator password	56
Setting, changing, and deleting a password .	56
Erasing lost or forgotten passwords (clearing
CMOS)	56
Enabling or disabling a device	57
Selecting a startup device	57
Selecting a temporary startup device . . . .	58
Selecting or changing the startup device
sequence	58
Changing the BIOS settings before installing a new
operating system	58
Exiting the Setup Utility program	58

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 conditions	61
Undetermined problems	63

Chapter 8. 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
Looking up FRU information	69
Locating parts on the system board	69

Chapter 9. Replacing FRUs	71
Removing and installing the computer stand . . .	71
Removing and reinstalling the frame stand . .	71
Removing and installing the monitor stand . .	73
Removing the computer cover	75
Removing and reinstalling the feet stand . . . .	75
Removing and installing the hard-disk-drive EMI
shield	76
Replacing the 3.5-inch hard disk drive or hybrid
hard disk drive	78
Replacing the 2.5-inchsolid-state drive or hybrid
hard disk drive	80

Lenovo 10BL, E73Z manual Contents