Service Guide
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...the computer serviced. 0251: System CMOS checksum bad The system CMOS might have been corrupted by using the BIOS Setup Utility. 12 ThinkPad® X300 Service and Troubleshooting Guide v Make sure that the built-in the computer. Test the computer by an application program. If you have increased...you still see the same error code, do the following: If an external keyboard is set in keyboard operates correctly. Then test the memory with PC-Doctor. The computer uses the default settings. If you still see the same error code, have the external keyboard serviced. then...
...the computer serviced. 0251: System CMOS checksum bad The system CMOS might have been corrupted by using the BIOS Setup Utility. 12 ThinkPad® X300 Service and Troubleshooting Guide v Make sure that the built-in the computer. Test the computer by an application program. If you have increased...you still see the same error code, do the following: If an external keyboard is set in keyboard operates correctly. Then test the memory with PC-Doctor. The computer uses the default settings. If you still see the same error code, have the external keyboard serviced. then...
Service Guide
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... password or a supervisor password is set. Type the password and press Enter to restart the system. 14 ThinkPad® X300 Service and Troubleshooting Guide The system configuration changed , re-create the hibernation file. v If the memory size has been changed between the time your computer entered hibernation mode and the time it was...
... password or a supervisor password is set. Type the password and press Enter to restart the system. 14 ThinkPad® X300 Service and Troubleshooting Guide The system configuration changed , re-create the hibernation file. v If the memory size has been changed between the time your computer entered hibernation mode and the time it was...
Service Guide
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... correctly in the service partition is not operating properly. Check for Windows. For details, refer to ensure a proper connection. Memory problems Problem: Your memory is not available on your SSD model. 18 ThinkPad® X300 Service and Troubleshooting Guide Follow the appropriate corrective actions for your computer has been installed. 4. It may be necessary...
... correctly in the service partition is not operating properly. Check for Windows. For details, refer to ensure a proper connection. Memory problems Problem: Your memory is not available on your SSD model. 18 ThinkPad® X300 Service and Troubleshooting Guide Follow the appropriate corrective actions for your computer has been installed. 4. It may be necessary...
Service Guide
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...DIMMs with different capacities are available. Increasing memory capacity is an effective way to make programs run faster. You can increase the amount of memory in your computer by your computer. Turn the computer over . 40 ThinkPad® X300 Service and Troubleshooting Guide Close the computer display..., and turn the computer over again. This action reduces any static electricity in the memory slot of your ...
...DIMMs with different capacities are available. Increasing memory capacity is an effective way to make programs run faster. You can increase the amount of memory in your computer by your computer. Turn the computer over . 40 ThinkPad® X300 Service and Troubleshooting Guide Close the computer display..., and turn the computer over again. This action reduces any static electricity in the memory slot of your ...
Service Guide
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then pivot it downward until it in only one of the two memory slots, install it snaps into the socket at an angle of about 20 degrees 1 ; Then tighten the screws to secure the cover 3 . 42 ThinkPad® X300 Service and Troubleshooting Guide With the notched end of the SO-DIMM toward the contact edge side of the cover first 1 , and closing the cover 2 . 7. Reinstall the cover of the memory slot by aligning the side of the socket, firmly insert the SO-DIMM into place 2. 1 2 1 2 Note: If you install a memory module in the slot on which "SLOT-0" is printed. 8.
then pivot it downward until it in only one of the two memory slots, install it snaps into the socket at an angle of about 20 degrees 1 ; Then tighten the screws to secure the cover 3 . 42 ThinkPad® X300 Service and Troubleshooting Guide With the notched end of the SO-DIMM toward the contact edge side of the cover first 1 , and closing the cover 2 . 7. Reinstall the cover of the memory slot by aligning the side of the socket, firmly insert the SO-DIMM into place 2. 1 2 1 2 Note: If you install a memory module in the slot on which "SLOT-0" is printed. 8.
Service Guide
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... X X Second battery X X X Travel cover X X X Internal CRUs (behind an access panel) Storage device X (HDD or SSD) X X Memory X X X PCI Express Mini Card (for your computer and where to locate the replacement instructions. v The Customer Support Center. Note: Only use computer parts... provided by Lenovo. For the telephone number of CRUs for wireless LAN and wireless USB) X X Internal CRUs (located within the product) Keyboard X X Online Video X X X X X 58 ThinkPad® X300 Service and Troubleshooting Guide The following table ...
... X X Second battery X X X Travel cover X X X Internal CRUs (behind an access panel) Storage device X (HDD or SSD) X X Memory X X X PCI Express Mini Card (for your computer and where to locate the replacement instructions. v The Customer Support Center. Note: Only use computer parts... provided by Lenovo. For the telephone number of CRUs for wireless LAN and wireless USB) X X Internal CRUs (located within the product) Keyboard X X Online Video X X X X X 58 ThinkPad® X300 Service and Troubleshooting Guide The following table ...
Service Guide
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troubleshooting (continued) battery 26 computer screen 23 error messages 10 errors without messages 16 fingerprint reader 28 keyboard 19 memory 18 optical drive 28 password 19 pointing device 20 sleep or hibernation 20 startup problems 28 storage device 27 U upgrading devices 35 W warranty information 55 Web help 47 worldwide support telephone list 49 76 ThinkPad® X300 Service and Troubleshooting Guide
troubleshooting (continued) battery 26 computer screen 23 error messages 10 errors without messages 16 fingerprint reader 28 keyboard 19 memory 18 optical drive 28 password 19 pointing device 20 sleep or hibernation 20 startup problems 28 storage device 27 U upgrading devices 35 W warranty information 55 Web help 47 worldwide support telephone list 49 76 ThinkPad® X300 Service and Troubleshooting Guide
