HP dc7800 tower manual 13Solving Memory Problems

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). 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: 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 2-13Solving Memory Problems

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

Cause	Solution
A memory module is not installed in the XMM1 (or DIMM1)	Ensure that a memory module is installed in the black XMM1
socket.	(or DIMM1) socket on the system board. This socket must be
	populated with a memory module.
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.
Insufficient memory error during operation.
Cause	Solution
Too many Terminate and Stay Resident programs (TSRs) are	Delete any TSRs that you do not need.
installed.
You have run out of memory for the application.	Check the memory requirements for the application or add
	more memory to the computer.

ENWW Solving Memory Problems 37