Chapter 11: Troubleshooting
145
Setup Dialog
The BIOS setup (F2) menu has the following selections:
->Advanced->Chipset Configuration->Memory Related Items:
Table 11-3. Memory Test Setup Items
Name
Selection Comments
System ECC
Enabled Default
Disabled
First Row Test Interval
4 cache line per 16 MB Default
Every location
Base Memory Test
Interval
4 cache line per 16 MB Default
Every location
Extended Memory Test
Interval
4 cache line per 16 MB Default
Every location
Defective DIMM Mapout
Enabled Default - Enables map out
Disabled Disables map out – NOT
RECOMMENDED
Clear Bad Memory Row
Info
Disabled Default - Don’t clear
history
Enabled Clear history
The test interval entries determine how much of the target memory is tested. The default in all cases
is 4 cache line per 16 MB (fastest mode). In the alternate mode, each cache line is tested.
The ‘Defective DIMM Mapout’ is used to turn off mapout completely. If this is disabled, defective
DIMMs will be detected, but not mapped out on the next BOOT. This may lead to data corruption and
loss and HP DOES NOT RECOMMEND that this feature be disabled in the BIOS.
The ‘Clear Bad Memory Row Info’ is used to clear the history, and retest all memory. This option is
used when defective memory has been replaced, and the user wishes to place it in service again. This
option automatically goes back to ‘disabled’ after the next boot.
Memory Testing Error Codes\Messages
8C51: Error in memory subsystem: Lower Board, DIMM 1
8C52: Error in memory subsystem: Lower Board, DIMM 2
8C53: Error in memory subsystem: Lower Board, DIMM 3
8C54: Error in memory subsystem: Lower Board, DIMM 4
8C55: Error in memory subsystem: Lower Board, DIMM 5
8C56: Error in memory subsystem: Lower Board, DIMM 6
8C57: Error in memory subsystem: Lower Board, DIMM 7
8C58: Error in memory subsystem: Lower Board, DIMM 8
