No Video; System Boot Failure; Memory Errors - Supermicro H12DGQ-NT6 User Manual

H12DGQ-NT6 User's Manual
5. The CMOS battery on your motherboard may be old. Check to verify that it still supplies
~3V DC. If it does not, replace it with a new one.

No Video

1. Check that the VGA cable is connected properly, and the monitor is on.
2. Check if you follow the guidelines to install the memory module (see DIMM Module
Population in chapter 2).
3. Reseat the memory DIMM module.

System Boot Failure

If the system does not display POST (Power-On-Self-Test) or does not respond after the
power is turned on, check the following:
1. Clear the CMOS settings by unplugging the power cord and contacting both pads on the
CMOS Clear Jumper (JBT1). Refer to chapter 2.
2. Remove all components from the motherboard, especially the DIMM modules.
3. Turn on the system with only one DIMM module installed. If the system boots, check for
bad DIMM modules or slots by following the Memory Errors Troubleshooting procedure
in this Chapter.

Memory Errors

1. Make sure that the DIMM modules are properly and fully installed.
2. Confirm that you are using the correct memory. Also, it is recommended that you use
the same memory type and speed for all DIMMs in the system. See Section 2.4 for
memory details.
3. Check for bad DIMM modules or slots by swapping modules between slots and noting
the results.
4. Check the power supply voltage 115V/230V switch.
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