Lenovo 90H9, Руководство по техническому обслуживанию аппаратной части

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• Checks some basic system-board operations
• Checks that the memory is working correctly
• Starts video operations
• Verifies that the boot drive is working
POST Error Message Description/Action
Keyboard error Cannot initialize the keyboard. Make sure
the keyboard is properly connected to the
computer and that no keys are held
pressed during POST. To purposely
configure the computer without a
keyboard, select
Keyboardless operation
in Startup option to Enabled . The BIOS
then ignores the missing keyboard during
POST.
Reboot and Select proper Boot device or
Insert Boot Media in selected Boot device The BIOS was unable to find a suitable
boot device. Make sure the boot drive is
properly connected to the computer. Make
sure you have bootable media in the boot
device.
Undetermined problems
1. Power-off the computer.
2. Remove or disconnect the following components (if connected or installed)
one at a time.
a. External devices (modem, printer, or mouse)
b. Extended video memory
c. External Cache
d. External Cache RAM
e. Hard disk drive
f.
Disk drive
3. Power-on the computer to re-test the system.
4. Repeat steps 1 through 3 until you find the failing device or component.
If all devices and components have been removed and the problem continues,
replace the system board.
Chapter 6. Symptom-to-FRU Index
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