Lenovo C315 All-In-One - Manual (Page 32)

Chapter 6. Symptom-to-FRU Index
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correct the cause of the first error message, the other error messages
probably will not appear on the screen the next time you turn on the
system.
POST Error Message Description/Action
CMOS Date/Time Not Set The CMOS Date and/or Time are
invalid. This error can be resolved
by readjusting the system time in
Phenix BIOS Setup.
CMOS Battery Low The CMOS battery is no longer
functional.
Replace the battery.
CMOS Checksum Bad Checksum of CMOS is incorrect.
The computer loads the default
configuration settings. This error
might indicate that CMOS has
become corrupt due to a weak
CMOS battery.
Primary Master Hard Disk Error The IDE/ATAPI device configured
as Primary Master/Primary Slave/
Secondary Master/Secondary Slave
could not be found or initialized.
Make sure the hard drive is correctly
installed.
Primary Slave Hard Disk Error
Secondary Master Hard Disk Error
Secondary Slave Hard Disk Error
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, set
keyboardless operation in Setup to
Enable. The BIOS then ignores the
missing keyboard during POST.
System Halted The system has been halted. A reset
or power cycle is required to reboot
the machine. This message appears
after a fatal error has been detected.
Press TAB to show POST screen Pressing the TAB key permits the
user to toggle between the default
POST display screen and a custom
POST display screen.