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Intermittent problems

Use this information to solve intermittent problems.

Table 1. Intermittent problems.

A table with one spanned column at the top and two additional columns with headers. This table provides information about symptoms and user actions to solve intermittent problems.

  • Follow the suggested actions in the order in which they are listed in the Action column until the problem is solved.
  • See Parts listing, Lenovo System x3750 M4 Type 8753 to determine which components are customer replaceable units (CRU) and which components are field replaceable units (FRU).
  • If an action step is preceded by (Trained service technician only), that step must be performed only by a Trained service technician.
SymptomAction
The server resets (restarts) occasionally.
  1. Check the IMM2 event log for messages associated with the restart event.
  2. If the reset occurs during POST and the POST watchdog timer is enabled (click System Settings --> Recovery --> System Recovery --> POST Watchdog Timer in the Setup utility (see Starting the Setup utility) to see the POST watchdog setting), make sure that sufficient time is allowed in the watchdog timeout value (POST Watchdog Timer). If the server continues to reset during POST, see UEFI/POST error codes and DSA diagnostic test results.
  3. If the reset occurs after the operating system starts, disable any automatic server restart (ASR) utilities, such as the Automatic Server Restart IPMI Application for Windows, or any ASR devices that are be installed.
    Note
    ASR utilities operate as operating-system utilities and are related to the IPMI device driver. If the reset continues to occur after the operating system starts, the operating system might have a problem; see Software problems.