Errors Without Messages - Lenovo ThinkPad T450s User Manual

Solution: thermal sensor has problem. Shut down the computer immediately and have the computer
serviced.
• Message: Error: The System UEFI Variable Storage is nearly full.
Note: This error indicates that the operating system or applications cannot create, modify, or delete data
in the non-volatile system UEFI variable storage due to insufficient storage space after POST.
The non-volatile system UEFI variable storage is used by the UEFI BIOS and by the operating system or
applications. This error occurs when the operating system or applications store large amounts of data
in the variable storage. All data needed for POST, such as BIOS setup settings, chipset or platform
configuration data, are stored in a separate UEFI variable storage.
Solution: Enter ThinkPad Tablet Setup after the error message is displayed. A dialog asks the user for
confirmation to clean up the storage. If the user selects "Yes", all data that were created by the operating
system or applications are deleted except global variables defined by the Unified Extensible Firmware
Interface Specification. If the user selects "No", all data is kept, but the operating system or applications
will not be able to create, modify, or delete data in the storage.
If this error happens at a service center, Lenovo authorized service personnel will clean up the non-volatile
system UEFI variable storage using the above solution.

Errors without messages

• Problem: My screen keeps blanking when I do not want it to.
Solution: If your computer is preinstalled with the Windows 7 operating system, you can disable any
system timers, such as the LCD turn-off timer or the blank timer by doing the following:
1. Start Power Manager.
2. Click the Power plan tab, and then select Maximum Performance from the predefined power plans.
• Problem: When I turn on the computer, nothing is displayed on the screen and the computer does not
beep while starting up.
Note: If you are not sure whether you heard any beeps, turn off the computer by pressing and holding the
power button for four seconds or more. Then turn on the computer and listen again.
Solution: Make sure that:
– The ac power adapter is connected to the computer and the power cord is plugged into a working
electrical outlet.
– The computer is turned on. (Press the power button again for confirmation.)
– The brightness level of the screen is appropriately set.
If a power-on password is set, press any key to display the prompt for the power-on password and
then type the correct password and press Enter.
If these items are correctly set, and the screen remains blank, have the computer serviced.
• Problem: When I turn on the computer, only a white pointer is displayed on a blank screen.
Solution: If you have modified a partition on your hard disk drive by using partition software, information
about that partition, or the master boot record might have been destroyed.
Do the following to try to solve the problem:
1. Turn off the computer, and then turn it on again.
2. If you still see only the pointer on the screen, do the following:
– If you have used partition software, examine the partition on the hard disk drive by using the
software, and recover the partition if required.
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User Guide