Lenovo ThinkPad A21e English - A21e(2655) Service and Troubleshooting Guide
Lenovo ThinkPad A21e Manual
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- Lenovo ThinkPad A21e | English - A21e(2655) Service and Troubleshooting Guide - Page 1
ThinkPad® A21e Service and Troubleshooting Guide - Lenovo ThinkPad A21e | English - A21e(2655) Service and Troubleshooting Guide - Page 2
supports, be sure to read the general information under "Appendix A. Important safety instructions battery pack is incorrectly replaced, exposed to fire or water, short-circuited or disassembled. Keep the battery or DVD drive unit, as this might result in the publication. IBM may make improvements - Lenovo ThinkPad A21e | English - A21e(2655) Service and Troubleshooting Guide - Page 3
users to access mobile resources, read tips and true stories, and share your own advice. Customize your ThinkPad with accessories, software and services. A one-click guide to service on the Web for your ThinkPad. Your gateway into a comprehensive help system, offering information about all of your - Lenovo ThinkPad A21e | English - A21e(2655) Service and Troubleshooting Guide - Page 4
your presentation v Use passwords and other security features v Install, remove and recover software v Upgrade your system v Extend the life of your battery v Troubleshoot problems v Contact IBM for service and support v Perform many other tasks iv ThinkPad® A21e Service and Troubleshooting Guide - Lenovo ThinkPad A21e | English - A21e(2655) Service and Troubleshooting Guide - Page 5
Some of the topics in your help system contain brief video clips that show you how to perform certain tasks, such as replacing your battery, inserting a PC card, or upgrading your memory. Use the controls shown to play, pause, and rewind the video clip. Finding information with Access ThinkPad v - Lenovo ThinkPad A21e | English - A21e(2655) Service and Troubleshooting Guide - Page 6
vi ThinkPad® A21e Service and Troubleshooting Guide - Lenovo ThinkPad A21e | English - A21e(2655) Service and Troubleshooting Guide - Page 7
Troubleshooting 11 Error messages 11 Errors without messages 14 Password problems 15 A power switch problem 15 Keyboard problems 15 TrackPoint problems 16 Standby or hibernation problems . . . . 17 Computer screen problems 21 Battery problems 22 Hard disk drive problems 23 Other problems - Lenovo ThinkPad A21e | English - A21e(2655) Service and Troubleshooting Guide - Page 8
viii ThinkPad® A21e Service and Troubleshooting Guide - Lenovo ThinkPad A21e | English - A21e(2655) Service and Troubleshooting Guide - Page 9
Chapter 1. Overview of your new ThinkPad computer Your ThinkPad at a glance 2 Features 3 Specifications 5 Caring for your ThinkPad computer . . . . 6 © Copyright IBM Corp. 2000 1 - Lenovo ThinkPad A21e | English - A21e(2655) Service and Troubleshooting Guide - Page 10
Your ThinkPad at a glance Your ThinkPad at a glance 2 ThinkPad® A21e Service and Troubleshooting Guide - Lenovo ThinkPad A21e | English - A21e(2655) Service and Troubleshooting Guide - Page 11
Features Processor v Intel® Celeron™ processor Memory v Built-in: 64 MB v Maximum: 256 MB Storage device v 2.5-inch hard disk drive: 20 GB Display The color display v TrackPoint® v Fn key function v ThinkPad button v Volume control buttons v ThinkLight Features Chapter 1. Overview of your new - Lenovo ThinkPad A21e | English - A21e(2655) Service and Troubleshooting Guide - Page 12
telephone connector (available if the modem Mini-PCI Card or the Combo Mini-PCI Card is installed) v RJ45 Ethernet connector (available if the Ethernet Mini-PCI Card or the Combo Mini-PCI Card is installed) v Ultrabay™ 2000 v Expansion connector 4 ThinkPad® A21e Service and Troubleshooting Guide - Lenovo ThinkPad A21e | English - A21e(2655) Service and Troubleshooting Guide - Page 13
Specifications Specifications Size v Width: 304.8 mm (12.0 in.) v Depth: 254.0 mm (10.0 in.) v When you charge the battery pack, its temperature must be at least 10°C (50°F). v Relative humidity: - Operating with no diskette in the drive: 8% to 95% - Operating with a diskette in the drive: 8% to 80 - Lenovo ThinkPad A21e | English - A21e(2655) Service and Troubleshooting Guide - Page 14
function of the level of system activity and battery charge level. Extended contact with your body, even hard disk drive and data loss. v When picking up your open computer, hold it by the bottom. Do not pick up or hold your computer by the display. 6 ThinkPad® A21e Service and Troubleshooting Guide - Lenovo ThinkPad A21e | English - A21e(2655) Service and Troubleshooting Guide - Page 15
hard disk drive (open Access ThinkPad by pressing the ThinkPad button). Take care in setting passwords v Remember your passwords. If you forget a supervisor or hard disk password, IBM will not reset company. v Your computer might have both an Ethernet connector and a modem connector. If so, be sure - Lenovo ThinkPad A21e | English - A21e(2655) Service and Troubleshooting Guide - Page 16
for your ThinkPad computer v Only an authorized IBM ThinkPad repair technician should disassemble and ). v Store your external and removable hard disk, diskette, CD-ROM, and DVD-ROM drives in the appropriate containers or packaging when soft cloth. 8 ThinkPad® A21e Service and Troubleshooting Guide - Lenovo ThinkPad A21e | English - A21e(2655) Service and Troubleshooting Guide - Page 17
Troubleshooting 11 Error messages 11 Errors without messages 14 Password problems 15 A power switch problem 15 Keyboard problems 15 TrackPoint problems 16 Standby or hibernation problems . . . . 17 Computer screen problems 21 Battery problems 22 Hard disk drive problems 23 Other problems - Lenovo ThinkPad A21e | English - A21e(2655) Service and Troubleshooting Guide - Page 18
Quick Test set have been run and that it has found no problems, consider running addi-tional tests. If you are preparing to contact IBM for support, be sure to print the test log so that you can rapidly provide information to the help technician. 10 ThinkPad® A21e Service and Troubleshooting Guide - Lenovo ThinkPad A21e | English - A21e(2655) Service and Troubleshooting Guide - Page 19
to the computer and charge the battery pack, or replace the battery pack with a fully charged one. 0200: Hard disk error The hard disk is not working. Make sure the hard disk drive is attached firmly. Run the BIOS Setup Utility; then make sure the hard disk drive is not disabled in the Startup - Lenovo ThinkPad A21e | English - A21e(2655) Service and Troubleshooting Guide - Page 20
. Then test the memory with PC-Doctor. 0250: System battery error The system battery is dead. Replace the battery and run the IBM BIOS Setup Utility to verify the configuration. If you still have a problem, have the computer serviced. 0251: System CMOS checksum bad The system CMOS may have been - Lenovo ThinkPad A21e | English - A21e(2655) Service and Troubleshooting Guide - Page 21
not found. Cause and action The computer is attached to a docking station that is not supported by ThinkPad A21e. Shut down the system and detach it from the docking station. A power-on password or a supervisor password is set. Type the password and press Enter to use the computer. If the power-on - Lenovo ThinkPad A21e | English - A21e(2655) Service and Troubleshooting Guide - Page 22
. ThinkPad A21e supports a memory size of equal or less than 256MB. Shut down the system and remove the installed DIMM. Press F1 to go to the IBM BIOS Setup Utility. Press F9 and then Enter to load the default setting. Press F10 and then Enter to restart the system. Errors without messages Problem - Lenovo ThinkPad A21e | English - A21e(2655) Service and Troubleshooting Guide - Page 23
system. Password problems Problem: I forgot my password. Solution: If you forgot your power-on password, you have to take your computer to an IBM reseller or marketing representative to have the password canceled. If you forgot your hard disk password, IBM will not reset your password or recover - Lenovo ThinkPad A21e | English - A21e(2655) Service and Troubleshooting Guide - Page 24
problem occurred immediately after the computer returned from standby mode, enter the power-on password if one has been set. If an external keyboard is connected to the computer via a ThinkPad computer serviced. Problem: A number appears when you type a ThinkPad® A21e Service and Troubleshooting Guide - Lenovo ThinkPad A21e | English - A21e(2655) Service and Troubleshooting Guide - Page 25
on your hard disk drive. If your hard disk drive does not contain device drivers, refer to the ThinkPad Service & Support Web site. To access this Web site, open Access ThinkPad by pressing the ThinkPad button, then click the Service & Support image on the right of the screen. Problem: The scrolling - Lenovo ThinkPad A21e | English - A21e(2655) Service and Troubleshooting Guide - Page 26
. 4. Double-click Intel EtherExpress PRO PCI Adapter. 5. Select the Disable in this hardware profile check box. 6. Click OK. 7. Close all windows. 8. Restart the computer. 18 ThinkPad® A21e Service and Troubleshooting Guide - Lenovo ThinkPad A21e | English - A21e(2655) Service and Troubleshooting Guide - Page 27
to disable your computer from entering standby or hibernation mode. Problem: The computer does not enter standby mode after the timeout driver for Windows 98 accesses the internal CD-ROM drive or DVD-ROM drive every 3 seconds to see if a CD-ROM is inserted in the CD-ROM drive or DVD-ROM drive - Lenovo ThinkPad A21e | English - A21e(2655) Service and Troubleshooting Guide - Page 28
\ CurrentControlSet\Services\Cdrom\ Autorun: 0x1 > Autorun: 0 Problem: The IBM communication PC Cards. To enter hibernation mode, stop the communication program, and then remove the PC Card or disable the PC Card slot, using the Control Panel. 20 ThinkPad® A21e Service and Troubleshooting Guide - Lenovo ThinkPad A21e | English - A21e(2655) Service and Troubleshooting Guide - Page 29
persists, do the "Solution" in the problem below. Problem: The screen is unreadable or distorted. Solution: Make sure that: v The display device driver is installed correctly. v The display resolution and color depth are correctly set. v The monitor type is correct. To check these settings, do - Lenovo ThinkPad A21e | English - A21e(2655) Service and Troubleshooting Guide - Page 30
hold the power switch for 4 seconds or over to turn off your computer. Problem: Missing, discolored, or bright dots appear on the screen every time you turn -discharged battery. If the battery cannot be fully charged in 24 hours, use a new battery. 22 ThinkPad® A21e Service and Troubleshooting Guide - Lenovo ThinkPad A21e | English - A21e(2655) Service and Troubleshooting Guide - Page 31
of a hard disk drive and is not a defect. Problem: The hard disk drive does not work. Solution: In the startup menu in the IBM BIOS Setup Utility, make sure that there is no exclamation point ! to the left of the words Hard Drive. If there is such a mark, the hard disk drive is disabled - Lenovo ThinkPad A21e | English - A21e(2655) Service and Troubleshooting Guide - Page 32
BIOS Setup Utility menu appears. 2. With the cursor key, select Config; then press Enter. 3. Select USB by pressing Enter. 4. With the cursor key, select Disable; then press Enter. 5. Press F10 and Enter to save this setting and exit this utility. 24 ThinkPad® A21e Service and Troubleshooting Guide - Lenovo ThinkPad A21e | English - A21e(2655) Service and Troubleshooting Guide - Page 33
any diskette from the diskette drive, and then turn off the computer. 3. Turn on the computer; then, while the " Press F1 for IBM BIOS Setup Utility" message is displayed at the lower-left of the screen, press F1. If you have set a supervisor password, the "IBM BIOS Setup Utility" menu appears after - Lenovo ThinkPad A21e | English - A21e(2655) Service and Troubleshooting Guide - Page 34
program. 4. From the list displayed on the screen, select the operating system you want to recover. 5. Select the recovery options you want, and follow the instructions on the screen. 26 ThinkPad® A21e Service and Troubleshooting Guide - Lenovo ThinkPad A21e | English - A21e(2655) Service and Troubleshooting Guide - Page 35
connect it. 2. Insert the Recovery CD into the CD-ROM or DVD-ROM drive. 3. Save all your files, and turn off your computer. 4. Change the boot sequence as follows: a. Turn on your computer; then while the Press F1 for IBM BIOS Setup Utility message is displayed at the lower left of the screen, press - Lenovo ThinkPad A21e | English - A21e(2655) Service and Troubleshooting Guide - Page 36
Solving computer problems To create a Recovery Repair diskette The Recovery Repair diskette is used and turn off your computer. 2. Insert the Recovery Repair diskette into the drive; then turn on the computer. 3. Follow the on-screen instructions. 28 ThinkPad® A21e Service and Troubleshooting Guide - Lenovo ThinkPad A21e | English - A21e(2655) Service and Troubleshooting Guide - Page 37
hard disk drive with one of greater capacity. You can purchase a new hard disk drive from your IBM reseller or IBM marketing representative. Note: Replace the hard disk drive computer over. 3. Remove the battery. 4. Remove the screw that secures the hard disk drive. You can use a coin in - Lenovo ThinkPad A21e | English - A21e(2655) Service and Troubleshooting Guide - Page 38
install them. Note: Make sure that the label on the hard disk drive faces to the bottom of the computer. 9. Reinstall the screw. 10. Reinstall the battery. 11. Turn the computer over again. Connect the ac adapter and the cables to the computer. 30 ThinkPad® A21e Service and Troubleshooting Guide - Lenovo ThinkPad A21e | English - A21e(2655) Service and Troubleshooting Guide - Page 39
spare battery with the left side of the battery space in the computer 1 ; then gently push the battery into the space 2 . 5. Slide the battery latch to the locked position. 6. Turn the computer over again. Connect the ac adapter and the cables to the computer. Chapter 2. Solving computer problems 31 - Lenovo ThinkPad A21e | English - A21e(2655) Service and Troubleshooting Guide - Page 40
Replacing the battery 32 ThinkPad® A21e Service and Troubleshooting Guide - Lenovo ThinkPad A21e | English - A21e(2655) Service and Troubleshooting Guide - Page 41
Chapter 3. Getting help and service from IBM Getting help and service 34 Getting help on the Web 34 Getting help by fax 35 Calling IBM 35 © Copyright IBM Corp. 2000 33 - Lenovo ThinkPad A21e | English - A21e(2655) Service and Troubleshooting Guide - Page 42
mail notifications whenever new information becomes available about your registered products. You also can order publications through the IBM Publications Ordering System at www.elink.ibmlink.ibm.com/public/applications/publications/cgibin/pbi.cgi 34 ThinkPad® A21e Service and Troubleshooting Guide - Lenovo ThinkPad A21e | English - A21e(2655) Service and Troubleshooting Guide - Page 43
can call the IBM Automated Fax System 24 hours a day, 7 days a week. Follow the recorded instructions, and the requested IBM FRU XXXXXXX v Identification of software problem sources v Configuration of BIOS as part of an installation or upgrade v Changes, modifications, or upgrades to device drivers - Lenovo ThinkPad A21e | English - A21e(2655) Service and Troubleshooting Guide - Page 44
Danish Spanish Finnish French German 623-2300 35 25 02 91 2-565-130 9-22 931 840 01-69 32 40 40 069-6654 9040 36 ThinkPad® A21e Service and Troubleshooting Guide - Lenovo ThinkPad A21e | English - A21e(2655) Service and Troubleshooting Guide - Page 45
Language Cantonese English Italian Japanese French Spanish Dutch English Norwegian Spanish Portuguese Spanish Swedish German/ French/ Italian Mandarin English English Getting help and service Telephone Number 2825-6900 01-815 9202 02-482 9202 0120-887-870 298-977 5063 01-800-426-1000 387-5991 020 - Lenovo ThinkPad A21e | English - A21e(2655) Service and Troubleshooting Guide - Page 46
Getting help and service 38 ThinkPad® A21e Service and Troubleshooting Guide - Lenovo ThinkPad A21e | English - A21e(2655) Service and Troubleshooting Guide - Page 47
Appendix A. Important safety instructions DANGER Electric current from power, telephone, and communication cables is hazardous. To avoid shock hazard, connect and disconnect . Attach the power cord to an outlet. Remove all cables from devices. Turn the device ON. © Copyright IBM Corp. 2000 39 - Lenovo ThinkPad A21e | English - A21e(2655) Service and Troubleshooting Guide - Page 48
, do not: (1) throw or immerse the battery into water, (2) allow it to heat to more than 100 °C (212 °F), or (3) attempt to repair or disassemble it. Dispose of it as required by local ordinances or regulations and your company's safety standards. 40 ThinkPad® A21e Service and Troubleshooting Guide - Lenovo ThinkPad A21e | English - A21e(2655) Service and Troubleshooting Guide - Page 49
the instruction below CAUTION: When you have added or upgraded a Mini PCI Card or a memory card, do not use your computer until you have closed the cover. Never telephone jacks in wet locations unless the jack is specifically designed for wet locations. Never touch uninsulated telephone wires - Lenovo ThinkPad A21e | English - A21e(2655) Service and Troubleshooting Guide - Page 50
system and the CD-ROM or DVD-ROM drive ensures that there is no exposure to laser radiation above a Class 1 level during normal operation, user maintenance, or servicing. Some drives contain an embedded Class 3A laser diode. Note this warning: 42 ThinkPad® A21e Service and Troubleshooting Guide - Lenovo ThinkPad A21e | English - A21e(2655) Service and Troubleshooting Guide - Page 51
DANGER Emits visible and invisible laser radiation when open. Avoid direct eye exposure. Do not stare into the beam or view it directly with optical instruments. Save these instructions. Appendix A. Important safety instructions 43 - Lenovo ThinkPad A21e | English - A21e(2655) Service and Troubleshooting Guide - Page 52
44 ThinkPad® A21e Service and Troubleshooting Guide - Lenovo ThinkPad A21e | English - A21e(2655) Service and Troubleshooting Guide - Page 53
. If you have any questions, contact IBM or your reseller. Machine - IBM ThinkPad A21e and the Battery Pack Warranty Period* -One Year *Elements from defects in materials and workmanship and 2) conforms to IBM's Official Published Specifications. The warranty period for a Machine is a specified, - Lenovo ThinkPad A21e | English - A21e(2655) Service and Troubleshooting Guide - Page 54
GIVE YOU SPECIFIC LEGAL Service To obtain warranty service for the Machine, contact your reseller or IBM. In the United States, call IBM at 1-800-772-2227. In Canada, call IBM at 1-800 565-3344. You may be required to present proof of purchase. 46 ThinkPad® A21e Service and Troubleshooting Guide - Lenovo ThinkPad A21e | English - A21e(2655) Service and Troubleshooting Guide - Page 55
center, to keep Machines in, or restore them to, conformance with their Specifications. IBM or your reseller will inform you of the available types of service for a Machine based on its country of installation. IBM may repair the failing Machine or exchange it at its discretion. When warranty - Lenovo ThinkPad A21e | English - A21e(2655) Service and Troubleshooting Guide - Page 56
reseller. The term "Machine" means an IBM machine, its features, conversions, upgrades, elements, or accessories, or any combination of them. The term "Machine" does not include any software programs, whether pre-loaded with the Machine, installed 48 ThinkPad® A21e Service and Troubleshooting Guide - Lenovo ThinkPad A21e | English - A21e(2655) Service and Troubleshooting Guide - Page 57
contact IBM or your reseller. Machine - IBM ThinkPad A21e and the Battery IBM or your reseller, if approved by IBM to provide warranty service, will provide repair and exchange service for the Machine, without charge, under the type of service THESE WARRANTIES GIVE YOU SPECIFIC LEGAL RIGHTS AND YOU - Lenovo ThinkPad A21e | English - A21e(2655) Service and Troubleshooting Guide - Page 58
the Machine is free of any legal obligations or restrictions that prevent its exchange; 2. obtain authorization from the owner to have IBM or your reseller service a Machine that you do not own; and 3. where applicable, before service is provided 50 ThinkPad® A21e Service and Troubleshooting Guide - Lenovo ThinkPad A21e | English - A21e(2655) Service and Troubleshooting Guide - Page 59
problem determination, problem analysis, and service request procedures that IBM or your reseller provides, b. secure all programs, data, and funds contained in a Machine, c. provide IBM DAMAGES (INCLUDING LOST PROFITS OR SAVINGS), EVEN IF IBM, ITS SUPPLIERS OR YOUR RESELLER IS INFORMED OF THEIR - Lenovo ThinkPad A21e | English - A21e(2655) Service and Troubleshooting Guide - Page 60
addition to any rights you may have under the Consumer Guarantees Act 1993 or other legislation which cannot be excluded or limited. The Consumer 52 ThinkPad® A21e Service and Troubleshooting Guide - Lenovo ThinkPad A21e | English - A21e(2655) Service and Troubleshooting Guide - Page 61
, Spain, Sweden, Switzerland or United Kingdom, you may obtain warranty service for that Machine in any of those countries from either (1) an IBM reseller approved to perform warranty service or (2) from IBM. If you purchased an IBM Personal Computer Machine in Albania, Armenia, Belarus, Bosnia and - Lenovo ThinkPad A21e | English - A21e(2655) Service and Troubleshooting Guide - Page 62
for an IBM Machine covers the functionality of the Machine for its normal use and the Machine's conformity to its Specifications. The IBM with fraud or gross negligence and for express warranty. In item 2, replace "$100,000" with "1.000.000 DEM". 54 ThinkPad® A21e Service and Troubleshooting Guide - Lenovo ThinkPad A21e | English - A21e(2655) Service and Troubleshooting Guide - Page 63
prejudice to the generality of the foregoing all warranties implied by the Sale of Goods Act 1893 or the Sale of Goods and Supply of Services Act 1980, are hereby excluded. Limitation of Liability: The following replaces items one and two of the first paragraph of this Section: 1. death or personal - Lenovo ThinkPad A21e | English - A21e(2655) Service and Troubleshooting Guide - Page 64
Service: The following is added to this Section: To obtain warranty service from IBM, call 1-800-565-3344. UNITED STATES OF AMERICA: Warranty Service: The following is added to this Section: To obtain warranty service from IBM, call 1-800-772-2227 56 ThinkPad® A21e Service and Troubleshooting Guide - Lenovo ThinkPad A21e | English - A21e(2655) Service and Troubleshooting Guide - Page 65
to: IBM Director of Licensing IBM Corporation North Castle Drive Armonk, NY 10504-1785 U.S.A. Processing date data This IBM hardware product and IBM software to determine the capabilities of their products and update them if needed. This IBM hardware product cannot prevent errors that might occur - Lenovo ThinkPad A21e | English - A21e(2655) Service and Troubleshooting Guide - Page 66
IBM product, and use of those Web sites is at your own risk. Electronic emission notices Federal Communications Commission (FCC) Statement ThinkPad A21e, machine type 2655 and used in accordance with the instructions, may cause harmful interference to ThinkPad® A21e Service and Troubleshooting Guide - Lenovo ThinkPad A21e | English - A21e(2655) Service and Troubleshooting Guide - Page 67
of the Member States relating to electro-magnetic compatibility. IBM cannot accept responsibility for any failure to satisfy the be sure to follow the installation instructions for your fax software package. 2. The built-in modem is built into the ThinkPad computer. It complies with Part 68 - Lenovo ThinkPad A21e | English - A21e(2655) Service and Troubleshooting Guide - Page 68
problem has been corrected, or until you are sure the equipment is not malfunctioning. 7. No customer repairs are possible to the modem. If you experience trouble with this equipment, contact your Authorized Seller or the IBM transmission charges.) 60 ThinkPad® A21e Service and Troubleshooting Guide - Lenovo ThinkPad A21e | English - A21e(2655) Service and Troubleshooting Guide - Page 69
must also be installed using an acceptable method of communication. In some cases, the company's inside wiring associated with a single line individual service may be extended by means of a certified connector assembly (telephone extension cord). The customer should be aware that compliance with the - Lenovo ThinkPad A21e | English - A21e(2655) Service and Troubleshooting Guide - Page 70
que la conformité aux conditions énoncées ci-dessus n'empechent pas la dégradation du service dans certaines situations. Actuellement, les entreprises de télécommunication ne permettent pas que l'on raccorde network. It indicates no endorsement of 62 ThinkPad® A21e Service and Troubleshooting Guide - Lenovo ThinkPad A21e | English - A21e(2655) Service and Troubleshooting Guide - Page 71
imply that any product is compatible with all of Telecom's network services. 2. This equipment is not capable under all operation conditions of Telecom's specifications: v There shall be no more than 10 call attempts to the same number within any 30-minute period for any single manual call - Lenovo ThinkPad A21e | English - A21e(2655) Service and Troubleshooting Guide - Page 72
Notice for European Union countries Hereby Ambit declares that this ″J07M041.00″ modem is in conformity with the essential requirements and other relevant provisions of Directive 1999/5/EC. 64 ThinkPad® A21e Service and Troubleshooting Guide - Lenovo ThinkPad A21e | English - A21e(2655) Service and Troubleshooting Guide - Page 73
Corporation in the United States or other countries or both: IBM HelpCenter PS/2 ThinkPad TrackPoint Ultrabay Microsoft, Windows, and Windows NT are trademarks of Microsoft Corporation in the United States and/or other countries. Intel and Celeron are trademarks - Lenovo ThinkPad A21e | English - A21e(2655) Service and Troubleshooting Guide - Page 74
66 ThinkPad® A21e Service and Troubleshooting Guide - Lenovo ThinkPad A21e | English - A21e(2655) Service and Troubleshooting Guide - Page 75
help by 35 H hard disk problems 23 upgrading 29 hibernation problems 17 I IBM help iii K keyboard problems 15 O on-board help iii P password problems 15 PC-Doctor for Windows 10 power switch problems 15 problems, troubleshooting 11 R recovering software 26 S safety instruction 39 standby problems 17 - Lenovo ThinkPad A21e | English - A21e(2655) Service and Troubleshooting Guide - Page 76
68 ThinkPad® A21e Service and Troubleshooting Guide - Lenovo ThinkPad A21e | English - A21e(2655) Service and Troubleshooting Guide - Page 77
- Lenovo ThinkPad A21e | English - A21e(2655) Service and Troubleshooting Guide - Page 78
Part Number: 12P1906 (1P) P/N: 12P1906
ThinkPad
®
A21e
Service and Troubleshooting Guide
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