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The BIOS uses a series of beeps on the internal speaker to alert the user to problems
during the boot process. In the Table 21, numbers indicate beeps;
dashes indicate a pause between beeps.
Table 17. BIOS Beep Codes
||Memory failure (all four rows have
mismatched Serial Presence Detect [SPD] data). Specification requires all four DIMMs of
any row must have the same SPD data.
||Recovery completed successfully
Password is incorrect!
The password you entered does not match the required password.
Password must be cleared before a new password can be set!
Use the Clear User Password or Clear Administrator Password button on the Security Tab
to clear the password before entering a new password.
Password cannot be zero length!
Passwords must contain one or more characters.
Password entries do not match!
The passwords entered in the Password Verification dialog do not match. Enter the
Altered settings have not been saved! Selecting "Continue" will discard
Configuration settings have been changed but not saved. Press Continue
to exit without saving the changes, or press Clear to return to
PXE-E05: Download buffer is smaller than requested file.
This error is displayed if the size of the requested file is larger than the allocated
PXE-E07: Network device error.
Network device could not be initialized or had some other unexpected failure.
PXE-E09: Could not allocate I/O buffers.
This error is displayed if there is not enough system memory to allocate network I/O
PXE-E12: Could not detect network connection. Check cable.
Cable is not connected to NIC or something is wrong with NIC or cable.
PXE-E16: Valid PXE offer not received.
Client did not receive a valid PXE offer. This error is displayed for a number of
- There are no Dynamic Host Configuration Protocol (DHCP) or proxyDHCP servers that can
receive the clients DHCP discover packets.
- There are no DHCP or proxyDHCP servers that can transmit DHCP offer packets to the
- The DHCP and/or proxyDHCP offer packets received by the client do not contain enough
information to complete a remote boot.
PXE-E21: Remote boot cancelled.
The user pressed <Esc> or <Ctrl+C> or selected a "Local Boot"
option from the remote boot menu.
This message is also displayed when a DHCP/proxyDHCP server sends down a menu that
autoselects "Local Boot" and when a boot server sends down a bootstrap program
that returns control to the PXE LoadFile protocol.
PXE-E22: Client received an ICMP error from server.
An Internet Control Message Protocol (ICMP) error was sent to the client by a PXE boot
server or M/TFTP server.
PXE-E23: Client received TFTP error from server.
A Trivial File Transfer Protocol (TFTP) server sent a TFTP error packet to the client.
PXE-E98: <extra information about previous error code>
If available, extra error information will be displayed about the previous error
PXE-E99: Unexpected network error: XXh
This error is displayed if an EFI status code is returned by the network drivers that
was not expected by the PXE LoadFile protocol.
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