Memory Problems; Password Problems - Lenovo ThinkPad T400s Service And Troubleshooting Manual

Memory problems

Problem:
Solution:

Password problems

Problem:
Solution:
22
ThinkPad T400s Service and Troubleshooting Guide
Your memory is not operating properly.
1. Verify that the memory is installed and seated correctly in your
computer.
It may be necessary to remove all added memories to test the computer
with only the factory-installed memories, and then reinstall the memory
one at a time to ensure a proper connection. For the procedures to
remove and reinstall a memory, refer to "Replacing memory" on page 43.
2. Check for error messages during startup.
Follow the appropriate corrective actions for Power-on self-test (POST)
error messages.
3. Verify that the latest BIOS for your computer has been installed.
4. Verify the proper memory configuration and compatibility including the
maximum memory size and the memory speed.
For details, refer to the instructions in "Replacing memory" on page 43.
5. Run Lenovo System Toolbox by PC-Doctor.
If you cannot startup Windows, use PC-Doctor from the service partition
on your hard disk drive.
You forgot your password.
v If you forget your power-on password, you must take your computer to a
Lenovo authorized servicer or a marketing representative to have that
password canceled.
v If you forget your hard disk password, a Lenovo authorized servicer
cannot reset your password or recover data from the HDD or SSD. You
must take your computer to a Lenovo authorized servicer or a marketing
representative to have the HDD or SSD replaced. Proof of purchase is
required, and a fee will be charged for parts and service.
v If you forget your supervisor password, a Lenovo authorized servicer
cannot reset your password. You must take your computer to a Lenovo
authorized servicer or a marketing representative to have the system
board replaced. Proof of purchase is required, and a fee will be charged
for parts and service.