BIOS recovery code unable to nd valid BIOS recovery image
This computer has experienced a problem in locating a valid BIOS image, resulting in a failed startup.
You can resolve this problem by placing a clean copy of the system BIOS on a USB key or in the appropriate
hard drive directory and performing a reboot. If this error reoccurs, see General troubleshooting steps on page
69.
NOTE: The computer attempts to notify you of this problem through a series of blinking lights. When you
attempt to turn on the computer from an O or Hibernated state, lights associated with the caps lock and
num lock keys both blink twice, followed by a pause, and then continue in a repeating pattern.
Memory module error
This computer has experienced a memory initialization problem resulting in a failed startup. This issue might
be related to the memory modules in the computer. You can resolve this problem by ensuring that memory
modules are correctly inserted and seated.
If this error reoccurs, you must use a service event to determine the source of the error (memory modules or
system board) and take the appropriate corrective action.
NOTE: The computer attempts to notify you of this problem through a series of blinking lights. When you
attempt to turn on the computer from an
O or Hibernated state, lights associated with the caps lock and
num lock keys both blink three times, followed by a pause, and then continue in a repeating pattern.
Graphics Controller Error (No Controller)
This computer has experienced a graphics controller initialization problem resulting in a failed startup. This
issue might be related to the graphics controller in your machine.
You can resolve this problem by ensuring that the graphics controller module is seated correctly in machines
with modular graphics. If this error reoccurs, you must use a service event to identify the source of the error
and take the appropriate corrective action.
NOTE: The computer attempts to notify you of this problem through a series of blinking lights. When you
attempt to turn on the computer from an O or Hibernated state, lights associated with the caps lock and
num lock keys both blink four times, followed by a pause, and then continue in a repeating pattern.
Failure System Board Error
This computer has experienced a system board initialization problem resulting in a failed startup. This issue
might be related to the system board in the computer. You must use a service event to identify the source of
the error and take the appropriate corrective action.
NOTE: The computer attempts to notify you of this problem through a series of blinking lights. When you
attempt to turn on the computer from an O or Hibernated state, lights associated with the caps lock and
num lock keys both blink ve times, followed by a pause, and then continue in a repeating pattern.
Intel Trusted Execution Technology (TXT) Error
This computer has experienced a problem related to the Intel Trusted Execution Technology resulting in a
failed startup. The error occurs when three situations are true:
● The Intel Trusted Execution Technology (TXT) has been enabled on the computer.
● Policies have been set to prevent startup if the BIOS measurement has changed.
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Chapter 7 Troubleshooting guide
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