: This settings only apply for System x3650 M5.

How to disable adapter option ROM support in UEFI.

1. Reboot System then press F1 for UEFI (bios)
2. Highlight System Settings and press Enter.
3. Select Devices and I/O Ports and press Enter.
4. Select Enable / Disable Adapter Option ROM Supprt and press Enter.
   Enable Controller/Disable Legacy Option ROM(s)
   Legacy_Ethernet 1
   Legacy_Ethernet 2
   Legacy_Ethernet 3
   Legacy_Ethernet 4
   Legacy_Slot 1
   Legacy_Slot 2
   Legacy_Slot 3
   Legacy_Slot 4
   Legacy_Slot 5
   Legacy_Slot 6
   Legacy_Slot 7
   Legacy_Slot 8
   Legacy_Slot 9
   Legacy_Video
   Enable Controller/Disable UEFI Option ROM(s)
   UEFI_Ethernet 1
   UEFI_Ethernet 2
   UEFI_Ethernet 3
   UEFI_Ethernet 4
   UEFI_Slot 1
   UEFI_Slot 2
   UEFI_Slot 3
   UEFI_Slot 4
   UEFI_Slot 5
   UEFI_Slot 6
   UEFI_Slot 7
   UEFI_Slot 8
   UEFI_Slot 9
   UEFI_Video
5. press ESC to return to the System Configuration and Boot Management screen.
6. Highlight System Event Log and press Enter.
7. Select Clear System Event Log and press Enter.
8. press ESC to return to the System Configuration and Boot Management screen.
9. Highlight Save Settings and press Enter.
10. Shutdown the server and pull out all the power cable wait for 2 minutes the power on server as normal.

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How to disable C-States and C1E Enhance Mode:

METHOD A: via F1 setup

1. Press F1 at splash/logo screen after booting system, to enter setup.
2. Navigate: /System Settings /Operating Modes and select: Choose Operating Mode.
3. Select: Custom Modein the pop-up window.
4. Press ESC key to go back.
5. Select: C1 Enhance Mode, choose: Disable.
6. Press ESC key.
7. Select: CPU C-States, choose: Disable.
8. Press ESC until System Configuration menu is displayed.
9. Select: Save Settings, then: Exit Setup.