Lenovo ThinkPad T420 Support and Manuals

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Dobrý den chtěl bych se zeptat kde na klávesnici najdu toto tlačítkoP"5;ede...
(Posted by pepapolivka10 5 years ago)
Dvd Player
My DVD player is not working on my laptop T420. Need help fixing it.
(Posted by gilldoug24 8 years ago)

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Popular Lenovo ThinkPad T420 Manual Pages

(English) BIOS Setup using Windows Management Instrumentation Deployment Guide - Page 22

...HDP 3 Parameter 2 Current password string • "abc" - Restoring default settings To restore default BIOS settings, use the Lenovo_LoadDefaultSettings class, then use the Lenovo_SaveBiosSettings class to change BIOS settings and POP or HDP, you must reboot the system after changing one of them. • A password cannot be updated or cleared. 14 Lenovo BIOS Setup using this method when...
Hardware Maintenance Manual - Page 3

... 47 Numeric error codes 47 Error messages 49 Beep symptoms 50 No-beep symptoms 50 LCD-related symptoms 50 Intermittent problems 52 Undetermined problems 52 Chapter 5. Status indicators . . . . . 53 Chapter 6. Removing and replacing a FRU 65 Before servicing ThinkPad T420 and T420i . . . 66 1010 Battery pack 67 1020 ExpressCard blank bezel 68 1030 Serial Ultrabay Enhanced device or...
Hardware Maintenance Manual - Page 29

...using the View Configuration option); "FRU identification for replacing and servicing FRUs: • If you are installed before doing this manual: • "Strategy for replacing FRUs Before replacing parts: Make sure that those settings remain in effect. Telephone numbers forLenovo Support are instructed to contact the Lenovo Customer Support Center if they need any assistance in...
Hardware Maintenance Manual - Page 33

... notes. "System supporting the Lenovo ThinkVantage Toolbox program and the PC-Doctor for a variety of the machine and the FRU part number are servicing sequence might be overwritten. • Replace a FRU only with a hardware defect, such as copying, saving, or formatting. Consider replacing a FRU only when a problem recurs. Chapter 3. Drives in the computer that the model of reasons...
Hardware Maintenance Manual - Page 35

... instructions on ThinkPad computers. To avoid this problem, you will need to your particular computer. Note: If a supervisor password has been set by repeating the operation. If you test one of these devices, you need to enable it to re-create the failure by running the diagnostics test included in the docking station, even if the computer supports the docking station...
Hardware Maintenance Manual - Page 40

... are servicing is preinstalled on models preinstalled with the Windows 7, Windows XP, Windows Server 2003, or Windows Server 2008 operating system. Select the device class to be displayed. Select the devices to be downloaded from the Lenovo Support Web site. • The two programs are applicable to troubleshoot and resolve computer internal storage and memory problems. Notes...
Hardware Maintenance Manual - Page 47

... the F1 key, and then turn on the computer. The ThinkPad Setup program opens. Related service information This chapter presents following information: • "Restoring the factory contents by using Recovery Disc Set When the hard disk drive (HDD) or solid state drive (SSD) is replaced because of time depends on the new drive. Order the...
Hardware Maintenance Manual - Page 56

... cursor appears. No-beep symptoms Symptom or error No beep, power-on indicator on password or a supervisor password is characteristic of TFT LCD technology, but excessive pixel problems can cause viewing concerns. The hard-disk password prompt appears. Make sure that Alert On LAN 2 in the ThinkPad Setup program is set . However, if the LCD has three or...
(English) User Guide - Page 187

..., do not support ThinkPad Setup features. If you want to receive updates and the latest information about them, refer to install the Supplement files and ThinkPad device drivers for the operating system you install a new operating system in the C:\SWTOOLS\APPS directory. The necessary files are using . "Windows 7" on page 171 - Go to protect files, data, and settings that were stored...
(English) User Guide - Page 191

... install.bat. Start ThinkPad Setup. 2. 3. Select Serial ATA (SATA). 6. the software may need to install application software, which is set up to the ThinkPad Web site at: http://www.lenovo.com/ThinkPadDrivers If you can install the Windows XP Service Pack 3 using the Windows XP Service Pack 3 Installation CD or download it will also need to the instructions in C:\SWTOOLS\DRIVERS...
(English) User Guide - Page 192

..., device drivers, and application software you can install the Windows XP Service Pack 3 using the Windows XP Service Pack 3 Installation CD or download it on your hard disk drive. Change the startup sequence of your hard disk drive. You can get access to C:\DRIVERS\WIN\IRST\PREPARE, and double-click install.cmd. 14. Download Intel Rapid Storage Technology Driver from a list or specific...
(English) User Guide - Page 202

...does not support it. 184 User Guide Select the display device that is DisplayPort on dock Graphics Device • Integrated Graphics • Discrete Graphics • NVIDIA Optimus OS Detection for boot time, password prompt, and ThinkPad Setup. Integrated ... "Off", NumLock is enabled on docking station. "Digial 1 on dock" and "Digital 2 on dock" are using a Windows 7 model.
(English) User Guide - Page 214

... get the most use it. Update packages can be instructed on your computer and is producing error codes, it . Taking care of the problem. Each hardware component on Lenovo servers and can contain applications, device drivers, UEFI BIOS flashes, or software updates. If you need to use the ThinkVantage System Update, refer to download the latest drivers. Update packages are stored on...
(English) User Guide - Page 221

...: 0183: Bad CRC of the Security settings in EEPROM. Troubleshooting computer problems 203 4. Refer to the procedure in use). To clear the error, enter the ThinkPad Setup. Have the computer serviced. • Message: 0188: Invalid RFID Serialization Information Area Chapter 10. While the computer is not correct. After removing the extra memory module and reseating the original...
(English) User Guide - Page 247

..., you need to install ThinkPad PM driver. • Problem: The battery discharges slightly while the computer is enabled, the computer consumes small amount of ThinkPad Setup, make the computer enter hibernation mode. Solution: In the startup menu of power. Solution: Your computer supports an enhanced password algorithm. Troubleshooting computer problems 229 Solution: The computer...

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