Supermicro X11DPG-HGX2 User Manual page 63

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System Boot Failure (Available when an Internal Speaker is
Installed)
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. Check for any error beep from the motherboard speaker.
If there is no error beep, try to turn on the system without DIMM modules installed. If there
is still no error beep, replace the motherboard.
If there are error beeps, 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. Make
sure that system power is on and that memory error beeps are activated.
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.
Losing the System's Setup Configuration
1. Make sure that you are using a high quality power supply. A poor quality power supply
may cause the system to lose the CMOS setup information. Refer to Section 1.6 for
more information on power supply.
2. The battery on your motherboard may be old. Check to verify that it still supplies
~3VDC. If it does not, replace it with a new one.
3. If the above steps do not fix the setup configuration problem, contact your vendor for
repairs.
Chapter 3: Troubleshooting
63

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