Lenovo ThinkPad T420i Support and Manuals
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Most Recent Lenovo ThinkPad T420i Questions
My Laptop Is Giving An Error At Start - Fan Error
When I start my laptop, it gives an error - Fan error
When I start my laptop, it gives an error - Fan error
(Posted by alokj22 11 years ago)
Lenovo ThinkPad T420i Videos
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Popular Lenovo ThinkPad T420i Manual Pages
ThinkPad GOBI Mobile Broadband User Guide - Page 7
...www.lenovo.com/support/wireless, and then follow the instructions on the screen. • Start the ThinkVantage® System Update program by -step instructions on installing and configuring the wireless WAN adapter. b. Then, follow the precautions below. Installing and configuring the wireless WAN adapter
This chapter provides instructions on the setup posters. Note: If your Service...
(English) BIOS Setup using Windows Management Instrumentation Deployment Guide - Page 22
... and "Set a supervisor password on a remote computer when a supervisor password exists" on page 23 for password parameters is "pop,abc,def,ascii,us " - The format for sample scripts). raw ascii character • "1e302e" - Passwords can only be updated or cleared.
14 Lenovo BIOS Setup using this method when one of them.
• A password cannot be changed at the same boot as...
Hardware Maintenance Manual - Page 3
...
Chapter 8. Related service information 41
Restoring the factory contents by using Recovery Disc Set 41 Passwords 42
Power-on password 42 Hard-disk password 42 Supervisor password 43 How to use error message 24
Strategy for replacing FRUs for CTO, CMV, and GAV 25
Product definition 25 FRU identification for DOS diagnostics program 29 System supporting the Lenovo diagnostics programs...
Hardware Maintenance Manual - Page 29
..., any software fixes, drivers, and UEFI BIOS downloads. Telephone numbers forLenovo Support are installed before completing the service action.
Before replacing the adapter or device, remove the FRUs, one by this manual. then, when service has been completed, verify that all customer data on the hard disk to http://www.lenovo.com/support and click Download Drivers & Software. This...
Hardware Maintenance Manual - Page 40
... follow the instructions on the screen.
To run the UEFI diagnostic program, do the following :
34 ThinkPad T420 and T420i Hardware Maintenance Manual UEFI diagnostic program
A UEFI diagnostic program is available only on the computer. It also can
download the quick test programs from http://www.lenovo.com/diags.
Go to troubleshoot and resolve computer problems. It combines...
Hardware Maintenance Manual - Page 52
...set on the timer, and if the user does not do any of the following : • Press the Fn+F12 keys. • If you have to the docking station, do any operation with the keyboard, the TrackPoint, the hard disk...automatically in the boot record on , the computer returns from the hard disk drive.
46 ThinkPad T420 and T420i Hardware Maintenance Manual When the power is docked to restart ...
Hardware Maintenance Manual - Page 56
... that Alert On LAN 2 in the ThinkPad Setup program is set . The presence of a small number of four short beeps and a blank screen. Beep symptoms
Symptom or error
FRU or action, in sequence
1.
Type the password and press Enter.
A power-on 1 January, 2008 or later.
50 ThinkPad T420 and T420i Hardware Maintenance Manual System board. 2. DIMM. 2.
Make sure that...
Hardware Maintenance Manual - Page 58
... assembly
52 ThinkPad T420 and T420i Hardware Maintenance Manual
Verify that no more errors exist. Non-ThinkPad devices b. If the problem does not recur, reconnect the removed devices one at least 10 times. 2. Turn off the computer. 2. Printer, mouse, and other external devices d. External diskette drive or optical drive g.
Rerun the test to the docking station or the port...
(English) User Guide - Page 20
ThinkPad T420/T420i front view
1 Computer display 3 Fingerprint reader 5 TrackPoint pointing stick 7 System and power-status indicators ... provides clear and brilliant text and graphics. For details, refer to the instructions in stereo speaker (left ) 10 Integrated camera 12 Built-in microphone (right) 14 Built-in "Changing display settings" on page 69.
2 Power switch Use the power switch to turn ...
(English) User Guide - Page 187
...; "Installing device drivers" on page 175 • "ThinkPad Setup" on page 177 • "Using system management" on page 192
Installing a new operating system
If you install a new operating system in ThinkPad Setup. The UEFI/Legacy Boot setting must be using 64-bit version of Microsoft Windows Installation DVD, you will be the same as it is a Windows Vista Service Pack 2 or Windows 7 model...
(English) User Guide - Page 191
... Chipset SATA AHCI Controller. Select Startup menu. 8. Select UEFI/Legacy Boot. 9. When prompted, insert the diskette that you computer is set up to install application software, which is enabled, start ThinkPad Setup.
4. Install the Intel Chipset Support for Windows XP integrated with Service Pack 2 into the CD or DVD drive, and restart the
computer. 12. Select Config. Advanced...
(English) User Guide - Page 202
... if the OS does not support it.
184 User Guide This selection is DisplayPort on demand. Config menu items (continued)
• Off
Display
Boot Display Device
• ThinkPad LCD • Analog (VGA) • Digital on ThinkPad • Digital 1 on dock • Digital 2 on dock" are using a Windows 7 model.
NVIDIA Optimus runs as Integrated Graphics mode and Discrete Graphics...
(English) User Guide - Page 214
...connects to the Lenovo Support Web site, the System Update program automatically recognizes the machine type and model of your computer, the installed operating system, and the language of your country's Customer Support Center at specified intervals.
You can start the program manually, or you install the driver, the operating system can find your computer.
196 User Guide
14. After you...
(English) User Guide - Page 221
...consult the user's reference guide for other customer-replaceable components that all sources of power and external hardware. Error messages
• Message: 0176: System Security - To clear the error, enter the ThinkPad Setup. Solution: Checksum of Security Settings in the EEPROM is not correct. Have the computer serviced.
• Message: 0182: Bad CRC of the supervisor password in EEPROM...
(English) User Guide - Page 247
... you need to install ThinkPad PM driver.
• Problem: The battery discharges slightly while the computer is in Windows XP.
Troubleshooting computer problems 229 Solution: The computer cannot enter hibernation mode: -
Solution: The rattling noise might be heard: - This moves the entry to the "Boot priority order" list.
• Problem: After setting a hard disk password on page 39...
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