Nx-Boot Failure - Lenovo x3550 M4 Installation And Service Manual

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firmware in the primary bank, complete the following steps:

1. Restart the server.

2. When the prompt Press F3 to restore to primary is displayed, press F3 to

start the server from the primary bank.

Nx-boot failure

Configuration changes, such as added devices or adapter firmware updates, and

firmware or application code problems can cause the server to fail POST (the

power-on self-test).

If this occurs, the server responds in either of the following ways:

v The server restarts automatically and attempts POST again.

v The server hangs, and you must manually restart the server for the server to

attempt POST again.

After a specified number of consecutive attempts (automatic or manual), the

Nx-boot failure feature causes the server to revert to the default UEFI configuration

and start the Setup utility so that you can make the necessary corrections to the

configuration and restart the server. If the server is unable to successfully complete

POST with the default configuration, there might be a problem with the system

To specify the number of consecutive restart attempts that will trigger the Nx-boot

failure feature, in the Setup utility, click System Settings > Recovery > POST

Attempts > POST Attempts Limit. The available options are 3, 6, 9, and 255

(disable Nx-boot failure).

Chapter 4. Troubleshooting