Octek HIPPO II 486, Manual

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Appendix C
Troubleshooting
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MAIN MEMORY ERROR
After power up, the monitor remains blank, and
there are beep sounds indicating a main memory failure.
In this case, turn off the power and remove all SIMM
modules. Carefully place the modules back to the
sockets and make sure that all the modules are locked
by the locking latches firmly.
In some other cases, the total memory found by
the BIOS is different from the actual amount of memory
on board. ( Note that 128K bytes memory is reserved for
the shadow RAM function and will not be counted by the
BIOS). It is also a memory failure and you can follow the
instruction above.
CACHE MEMORY FAILURE
If the system hangs after memory test, it is likely
that the cache memory has some problems when the
secondary cache memory card is installed. Maybe some
of the SRAMs are damaged or the contact of the IC pins
is poor. Try to press the SRAM to make sure that the
SRAMs are inserted in the sockets, or examine the SRAM
to see whether any pins are bent under or out. If the
bent pins are found, remove the SRAM, straighten the
pin and place the SRAM again. You may also check the
BIOS setup of the cache configuration. If the cache
controller is enabled, you should select chipset's cache
controller. Otherwise, the system will fail.