Solving Memory Problems

If you encounter memory problems, some common causes and solutions are listed in the following table.

CAUTION: Power may still be supplied to the DIMMs when the computer is turned off (depending on the Management Engine (ME) settings on some models). To avoid damage to the DIMMs or the system board, you must unplug the computer power cord before attempting to reseat, install, or remove a DIMM module.

For those systems that support ECC memory, HP does not support mixing ECC and non-ECC memory. Otherwise, the computer will not boot the operating system.

NOTE: On some models. the memory count will be affected by configurations with the Management Engine (ME) enabled. The ME uses 8MB of system memory in single channel mode or 16MB of memory in dual-channel mode to download, decompress, and execute the ME firmware for Out-of-Band (OOB), third-party data storage, and other management functions.

Table 2-12Solving Memory Problems

System will not boot or does not function properly after installing additional memory modules.

Cause

Solution

 

 

On Intel systems, A memory module is not installed in the DIMM1 socket.

Ensure that a memory module is installed in the black DIMM1 socket on the system board. This socket must be populated with a memory module. Populate DIMM sockets in the following order for Intel systems: DIMM1, DIMM3, DIMM2, DIMM4.

On AMD systems, a memory module is not installed in the

The sockets must be populated with at least one memory

system board memory socket.

module. Install memory modules in the following order: XMM4,

 

XMM3, XMM2, XMM1.

 

 

Memory module is not the correct type or speed grade for the

Replace module with the correct industry-standard device for

system or the new memory module is not seated properly.

the computer. On some models, ECC and non-ECC memory

 

modules cannot be mixed.

 

 

Out of memory error.

 

 

 

Cause

Solution

 

 

Memory configuration may not be set up correctly.

Use the Device Manager to check memory configuration.

 

 

You have run out of memory to run the application.

Check the application documentation to determine the memory

 

requirements.

 

 

Memory count during POST is wrong.

 

 

 

Cause

Solution

 

 

The memory modules may not be installed correctly.

Check that the memory modules have been installed correctly

 

and that proper modules are used.

 

 

Integrated graphics may use system memory.

No action required.

 

 

34 Chapter 2 Troubleshooting Without Diagnostics

ENWW