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EVGA Z370 MICRO (121-KS-E375)
POST Beep codes
POST beeps are used in conjunction with the POST Code indicator to help determine
the root cause when your system fails to boot. However, modern UEFI/BIOS
motherboards also use the speaker to convey helpful information, such as USB device
detection. As a result, users
may become confused about
the number of beeps emitted,
making the POST code beep -
while still helpful - not as useful
as it once was.
Many motherboards will beep
1-2 times per USB device
plugged in at boot; some will
beep more based on functions of the device. These detection beeps may occur at the
same time as the system's POST beeps, sometimes making it a challenge to separate the
POST beeps from the USB initialization. Since the POST code indicator now fills most
of the role previously held by audible beeps, there are far fewer POST beeps to help
debug problems, compared to previous motherboard generations.
1 Beep: This relates to BIOS boot passwords. The BIOS will beep, indicating that a
password is required to boot. If you incorrectly enter your BIOS password when
prompted by the BIOS, you will receive one beep.
4 Beeps: This is an error relating to some small recovery errors, which can occur when
coming out of sleep/hibernate.
5 Beeps: This error is stating it cannot detect a keyboard. This can also indicate a video
card is not detected.
6 Beeps: This relates to either a failed BIOS update, or a failed Intel
ME Firmware
®
update.
7 Beeps: This relates to a failed CPU INIT request. EFI/UEFI Reset protocol is used
when a processor INIT call is used and was not successful. This returns either an
"EFI_UNSUPPORTED" error if the INIT type is not supported or an
"EFI_Device_Error" if the error occurs while generating the INIT; either will result in
seven (7) POST beeps.
8 Beeps: Error given when an incompatible PCI Express device is installed and cannot
initialize properly.
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