Solving undetermined problems
This information provides steps for solving undetermined problems.
About this task
If Dynamic System Analysis (DSA) did not diagnose the failure or if the server is
inoperative, use the information in this section.
If you suspect that a software problem is causing failures (continuous or
intermittent), see “Software problems” on page 205.
Corrupted data in CMOS memory or corrupted UEFI firmware can cause
undetermined problems. To reset the CMOS data, use switch 2 on the SW7 switch
block to clear the CMOS memory and override the power-on password; see Table 4
on page 31. If you suspect that the UEFI firmware is corrupted, see “Recovering
from a UEFI update failure or UEFI image corruption” on page 210.
If the power supplies are working correctly, complete the following steps:
Procedure
1. Turn off the server.
2. Make sure that the server is cabled correctly.
3. Remove or disconnect the following devices, one at a time, until you find the
failure. Turn on the server and reconfigure it each time.
v Any external devices.
v Surge-suppressor device (on the server).
v Printer, mouse, and non-IBM devices.
v Each adapter.
v Hard disk drives.
v Memory modules. The minimum configuration requirement is one 4 GB
DIMM in slot 1.
4. Turn on the server.
Results
If the problem is solved when you remove an adapter from the server but the
problem recurs when you reinstall the same adapter, suspect the adapter; if the
problem recurs when you replace the adapter with a different one, try a different
PCIe slot.
If you suspect a networking problem and the server passes all the system tests,
suspect a network cabling problem that is external to the server.
208 System x3750 M4 Types 8722 and 8733: Installation and Service Guide
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