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Lenovo
3493DFU
User Manual
Lenovo 3493DFU User Manual
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Replacing the WiFi units . . . . . . . . .
57
Installing or removing the rear WiFi antenna .
62
Installing or removing the front WiFi antenna .
64
Replacing the keyboard or mouse . . . . .
66
Completing the parts replacement . . . . .
67
Chapter 6. Recovery information . . .
69
Recovery information for the Windows 7 operating
system . . . . . . . . . . . . . . . . . .
69
Creating and using recovery media . . . . .
69
Performing backup and recovery operations .
70
Using the Rescue and Recovery workspace .
71
Creating and using a rescue medium . . . .
72
Reinstalling preinstalled applications and
device drivers . . . . . . . . . . . . .
73
Reinstalling software programs . . . . . .
74
Reinstalling device drivers . . . . . . . .
74
Solving recovery problems . . . . . . . .
74
Recovery information for the Windows 8 operating
system . . . . . . . . . . . . . . . . . .
75
Chapter 7. Using the Setup Utility
program . . . . . . . . . . . . . . . .
77
Starting the Setup Utility program . . . . . . .
77
Viewing and changing settings . . . . . . . .
77
Using passwords. . . . . . . . . . . . . .
77
Password considerations . . . . . . . . .
78
Power-On Password
. . . . . . . . . .
78
Administrator Password . . . . . . . . .
78
Hard Disk Password. . . . . . . . . . .
78
Setting, changing, and deleting a password .
78
Erasing lost or forgotten passwords (clearing
CMOS) . . . . . . . . . . . . . . . .
79
Enabling or disabling a device
. . . . . . . .
79
Selecting a startup device . . . . . . . . . .
80
Selecting a temporary startup device . . . .
80
Selecting or changing the startup device
sequence . . . . . . . . . . . . . . .
80
Enabling ErP compliance mode . . . . . . . .
80
Exiting the Setup Utility program
. . . . . . .
81
Chapter 8. Updating system
programs . . . . . . . . . . . . . . .
83
Using system programs . . . . . . . . . . .
83
Updating (flashing) the BIOS from a disc . . . .
83
Updating (flashing) the BIOS from your operating
system . . . . . . . . . . . . . . . . . .
84
Recovering from a POST/BIOS update failure . .
84
Chapter 9. Preventing problems . . .
85
Keeping your computer current . . . . . . . .
85
Getting the latest device drivers for your
computer . . . . . . . . . . . . . . .
85
Updating your operating system . . . . . .
85
Using System Update . . . . . . . . . .
86
Cleaning and maintenance . . . . . . . . . .
86
Basics . . . . . . . . . . . . . . . .
86
Cleaning your computer . . . . . . . . .
87
Good maintenance practices . . . . . . .
88
Moving your computer
. . . . . . . . . . .
88
Chapter 10. Troubleshooting and
diagnostics . . . . . . . . . . . . . .
91
Basic troubleshooting . . . . . . . . . . . .
91
Troubleshooting procedure . . . . . . . . . .
92
Troubleshooting . . . . . . . . . . . . . .
92
Audio problems . . . . . . . . . . . .
93
CD problems . . . . . . . . . . . . .
94
DVD problems . . . . . . . . . . . . .
95
Intermittent problems . . . . . . . . . .
97
Keyboard, mouse, or pointing device
problems . . . . . . . . . . . . . . .
97
Monitor problems. . . . . . . . . . . .
99
Networking problems . . . . . . . . . .
101
Option problems . . . . . . . . . . . .
103
Performance and lockup problems . . . . .
104
Printer problems . . . . . . . . . . . .
106
Serial port problems. . . . . . . . . . .
106
Software problems . . . . . . . . . . .
107
USB problems . . . . . . . . . . . . .
108
Diagnostic programs . . . . . . . . . . . .
108
Lenovo Solution Center . . . . . . . . .
108
Lenovo ThinkVantage Toolbox . . . . . . .
109
PC-Doctor for DOS . . . . . . . . . . .
109
Chapter 11. Getting information, help,
and service . . . . . . . . . . . . .
111
Information resources . . . . . . . . . . . .
111
Lenovo ThinkVantage Tools . . . . . . . .
111
Lenovo Welcome . . . . . . . . . . . .
111
Help and Support. . . . . . . . . . . .
111
Safety and Warranty. . . . . . . . . . .
111
Lenovo Web site . . . . . . . . . . . .
111
Lenovo Support Web site. . . . . . . . .
112
Help and service . . . . . . . . . . . . . .
112
Using the documentation and diagnostic
programs . . . . . . . . . . . . . . .
112
Calling for service. . . . . . . . . . . .
112
Using other services
. . . . . . . . . .
113
Purchasing additional services
. . . . . .
113
Appendix A. Notices . . . . . . . . .
115
Trademarks . . . . . . . . . . . . . . . .
116
ii
ThinkCentre User Guide
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