Monitor And Video Problems - Lenovo ThinkEdge SE350 V2 Hardware Maintenance Manual

• If a memory module was disabled by the user or by POST, reseat the memory module; then, run the
Setup Utility and enable the memory module.
4. Run memory diagnostics. When you start a solution and press the key according to the on-screen
instructions, the LXPM interface is displayed by default. (For more information, see the "Startup" section
in the LXPM documentation compatible with your server at
can perform memory diagnostics with this interface. From the Diagnostic page, go to Run Diagnostic ➙
Memory test.
5. Reverse the modules between the channels (of the same processor), and then restart the server. If the
problem is related to a memory module, replace the failing memory module.
6. Re-enable all memory modules using the Setup Utility, and then restart the server.
7. (Trained technician only) Replace the system board.
Invalid memory population detected
If this warning message appears, complete the following steps:
Invalid memory population (unsupported DIMM population) detected. Please verify memory configuration is valid.
1. See "Memory module installation rules and order" on page 5
population sequence is supported.
2. If the present sequence is indeed supported, see if any of the modules is displayed as "disabled" in
Setup Utility.
3. Reseat the module that is displayed as "disabled," and reboot the system.
4. If the problem persists, replace the memory module.

Monitor and video problems

Use this information to solve problems related to a monitor or video.
• "Incorrect characters are displayed" on page 164
• "Screen is blank" on page 164
• "Screen goes blank when you start some application programs" on page 165
• "The monitor has screen jitter, or the screen image is wavy, unreadable, rolling, or distorted" on page 165
• "The wrong characters appear on the screen" on page 165
Incorrect characters are displayed
Complete the following steps:
1. Verify that the language and locality settings are correct for the keyboard and operating system.
2. If the wrong language is displayed, update the server firmware to the latest level. See "Update the
firmware" in User Guide or System Configuration Guide.
Screen is blank
Note: Make sure that the expected boot mode has not been changed from the UEFI to Legacy or vice versa.
1. If the server is attached to a KVM switch, bypass the KVM switch to eliminate it as a possible cause of
the problem: connect the monitor cable directly to the correct connector on the server.
2. The management controller remote presence function is disabled if you install an optional video adapter.
To use the management controller remote presence function, remove the optional video adapter.
3. Make sure that:
• The server is turned on and there is power supplied to the server.
• The monitor cables are connected correctly.
• The monitor is turned on and the brightness and contrast controls are adjusted correctly.
ThinkEdge SE350 V2 Hardware Maintenance Guide
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https://pubs.lenovo.com/lxpm-overview/
to make sure the present memory module
.) You