Nmi Switch; System Board Leds - HP ProLiant DL320 Generation 4 Maintenance And Service Manual

Position
S5
S6
S7
S8
* "On" activates the function.

NMI switch

The NMI switch allows administrators to perform a memory dump before performing a hard reset. Crash
dump analysis is an essential part of eliminating reliability problems, such as hangs or crashes in
operating systems, device drivers, and applications. Many crashes freeze a system, requiring you to do a
hard reset. Resetting the system erases any information that would support root cause analysis.
Systems running Microsoft® Windows® operating systems experience a blue screen trap when the
operating system crashes. When this happens, Microsoft® recommends that system administrators
perform an NMI event by pressing a dump switch. The NMI event enables a hung system to become
responsive again.

System board LEDs

Item Description
1 Processor
2 Overtemperature
Default Function
Off Off = Power-on password enabled
On = Power-on password disabled *
Off Off = Normal operation
On = BIOS will clear CMOS and
NVRAM *
Off Reserved
Off Reserved
Status
Amber = Processor has failed.
Off = Processor is operating normally.
Amber = System has reached a cautionary or
critical temperature level.
Off = Temperature is OK.
Component identification 59