Installation of memory module - Computers & Internet

Allan Cairnduff,
Below is the information for the 3,4 diag error.
Memory modules are detected, but a memory failure has occurred.

• If two or more memory modules are installed, remove the modules (see your service manual), then reinstall one module (see your service manual and restart the computer. If the computer starts normally, continue to install additional memory modules (one at a time) until you have identified a faulty module or reinstalled all modules without error.
• If available, install working memory of the same type into your computer.
• The memory specs for this computer are listed below.
• Type DDR3 Synch DRAM Non-ECC Memory Memory Speed 1333MHz Memory Connectors Four (MT, DT, SFF), Two (USFF) Memory capacities Up to 4GB Minimum Memory 1GB Maximum Memory 16GB(with 1333MHz speed memory)/8GB for uSFF only Memory
  
  The OptiPlex 790 system supports up to 16 GB of memory in the mini-tower (MT), desktop (DT), and small form factor (SFF) chassis with 64-bit operating system. The maximum memory supported in the ultra-small form factor (USFF) is 8GB. The memory speed supported is 1333MHz DDR3 memory.
  However, 32-bit operating systems can only use maximum 4GB memory address space. Certain components within the computer require address space in the 4GB range, any address space reserved for these components cannot be used by computer memory the amount of memory available to the operating system is less than 4GB.
  NOTE:
  Memory modules should be installed in pairs of matched memory size, speed, and technology. If the memory modules are not installed in matched pairs, the computer will continue to operate, but with a slight reduction in performance.
  NOTE:
  The total amount of available memory will be less than 4GB. The amount less depends on the actual system configuration. To fully utilize 4GB or more of memory requires a 64-bit enabled processor and 64-bit operating system Thank You,
• Dell-Jesse L

Hi,
Looks like Memory Issue,
Memory modules are detected, but a memory power failure has occurred.
You can try as follows :

• If two or more memory modules are installed, remove the modules, then reinstall one module and restart the computer. If the computer starts normally, continue to install additional memory modules (one at a time) until you have identified a faulty module or reinstalled all modules without error. If only one memory module is installed, try moving it to a different DIMM connector and restart the computer.
• If available, install verified working memory of the same type into your computer.

Let me know
Thanks

Number of Memory Slots: 4-240pin


Note:


1. Before you install memory module on this motherboard, please read below message to avoid any improper installation: - Due to chipset limitation, if you plan to install three or four memory modules on this motherboard, please install only single-sided memory modules.To install two memory modules on this motherboard, please install them on DDR3_A1 and DDR3_B1 DIMM sockets.
2. For the detailed installation information, please refer to the user manual or quick installation guide. - Due to the operating system limitation, the actual memory size may be less than 4GB for the reservation for system usage under Windows 32-bit OS. For Windows 64-bit OS with 64-bit CPU, there is no such limitation.


Memory Standard: DDR3 1333/1066

The Intel® Server Board S875WP1-E supports both ECC and Non ECC Unbuffered PC2100 (266 MHz), PC2700 (333 MHz), or PC3200 (400 MHz) compliant Double Data Rate (DDR) memory modules. Dual channel memory functionality requires two DIMM modules installed into DIMM sockets 1A & 1B, and then DIMM sockets 2A & 2B. The DIMM module size, speed and vendor must be the same.

You can install a single 128 MB memory module into DIMM socket 1A. The minimum supported memory size is 128 MB. The minimum main memory configuration is a single 128 MB memory module, and the maximum configurable memory size is 4GB. With only a single memory module installed, the system will only operate using a one memory channel.
Third party memory vendors may use the same module part number with different
DRAM vendors and die revisions. To insure proper system operation, verify that each DRAM
vendor and die revision has been separately tested and qualified. Please notify CMTL if there is a discrepancy.

eMachines T3642 Computer takes the PC2-5300 DDR2 SDRAM DIMMs. Supports Dual Channel DDR2. Memory Type, and comes installed with 1.0 GB = 512 MB (removable) + 512 MB (removable) of Memory. You can upgrade your eMachines eMachines T3642 Computer to up to a maximum of 2.0 GB Memory, the system has 2 sockets to install Memory, already with 1.0 GB = 512 MB (removable) + 512 MB (removable) standard Memory installed. For best Computer performance use the maximum amount of allowed Memory per slot for your Computer.


INSTALLATION PROCEDURE
1. Place the computer power switch in the "off " position and disconnect the AC power cord.
2. Remove the computer top cover following the instructions in the model-specific owner manual.
3. Before touching any electronic components, make sure you first touch an unpainted, grounded metal object to discharge any static electricity stored on your clothing or body.
4. Locate the memory expansion sockets on the computer motherboard. If all the sockets are full, remove smaller capacity modules to allow room for higher capacity modules.
5. The ejector tabs shown in the illustration are used to remove a module. By pushing outward on the ejector tabs, the module will pop-up from the socket and it can then be removed.
6. Handle your new module carefully; do not flex or bend the module. Always grasp the module by its edges.
7. For most installations, DDR modules can be installed in any available expansion slot. Other installations may require the memory to be installed in a particular sequence based on the modules capacity. Check your owner manual to determine the correct installation sequence for your configuration.

Insert the module into an available expansion socket. Note how the module is keyed to the socket. This ensures the module can be plugged into the socket one way only. Firmly press the module into position, making certain the module is completely seated in the socket. The ejector tabs at each end of the socket will automatically snap into the locked position. Repeat this procedure for any additional modules you are installing. 8. Once the module or modules have been installed, the computer top cover can be reinstalled.
9. Plug in the AC power cord and reinstall any cables disconnected during the installation process.
10. Turn on the computer and follow the instructions in your computer owner manual that describe the steps necessary to allow your computer to recognize the newly installed memory.

I’m happy to help further over the phone at https://www.6ya.com/expert/william_83fc156eee2b555e

According to the specs of this motherboard, it supports DDR 333/400 and DDR2 533/400 memory modules. It does not support DDR2 667 memory modules.
DDR 333/400 memory modules can be installed in the yellow slots, whereas DDR2 533/400 memory modules can be installed in the blue slots.
Only one type of memory modules (either DDR or DDR2) can be used. Mixing of different types of memory modules is not supported.

If 1 & 2 are off ... then you have problems.

Memory modules are detected, but a memory failure has occurred.

• If you have one memory module installed, reinstall it and restart the computer. (see Memory for instructions on how to remove and install memory modules.)
• If you have two or more memory modules installed, remove the modules, reinstall one module, and then restart the computer. If the computer starts normally, reinstall an additional module. Continue until you have identified a faulty module or reinstalled all modules without error.
• If available, install properly working memory of the same type into your computer.
• If the problem persists, contact Dell (see Contacting Dell).

According to Dell's notes:
Memory modules are detected, but a memory failure has occurred.

Their remedies are:

• If you have one memory module installed, reinstall it and restart the computer. (see Memory for instructions on how to remove and install memory modules.)
• If you have two or more memory modules installed, remove the modules, reinstall one module, and then restart the computer. If the computer starts normally, reinstall an additional module. Continue until you have identified a faulty module or reinstalled all modules without error.
• If available, install properly working memory of the same type into your computer.
• If the problem persists, contact Dell (see Contacting Dell).

The computer has two memory expansion slots—Slot A and
Slot B. You can install one or two memory modules.

1 Shut down your computer completely using the Shut Down
command.

2 Unplug the computer.
CAUTION: Installing a memory module with the computer’s
power on may damage the computer, the module, or both.

3 Close the display panel and remove any cables you may have
connected.

4 Turn the computer upside down.

5 Locate and remove the screws that hold the cover plate in
place, then remove the cover from the bay.

Removing the memory module cover
CAUTION: Static electricity can damage the memory module.
Before you handle the module, touch a grounded metal
surface to discharge any static electricity you may have built
up.

To avoid damaging the memory module, be careful not to
touch its pin connector on the side you insert into the
computer.

6 Remove the new memory module from its antistatic
packaging.

7 Insert the memory module in the slot and gently press it down
into place.

The clips on either side of the module will click to secure the
module.

Inserting the memory module into the slot

8 Replace the cover plate and the screws.

9 Turn the computer over and restart it.

When you turn on the computer, it automatically recognizes
the additional memory.

Removing a memory module
If you need to remove a memory module:

1 Complete steps 1–6 in “Installing a memory module” to shut
down the computer and open the memory module cover.
2 Pull the clips away from the memory module.
The memory module pops partially out of the slot.

Adding memory
Pulling the clips away from the memory module
3 Carefully remove the module from the slot.
4 Replace the cover plate and screws.
5 Turn the computer over and restart it.

http://support.dell.com/support/edocs/systems/latd600/sm/upgrades.htm#999869

Memory Module, Mini PCI Card, and Modules Dell™ Latitude™ D600 Service Manual
Memory Module
Mini PCI Card
Modules

Memory Module CAUTION: Before working inside your Dell™ computer, read the safety instructions in your System Information Guide. CAUTION: Toprevent static damage to components inside your computer, dischargestatic electricity from your body before you touch any of yourcomputer's electronic components. You can do so by touching anunpainted metal surface. NOTE: Memory modules purchased from Dell are covered under your computer warranty.

1. Follow the instructions in "Preparing to Work Inside the Computer."
   
   
2. Turn the computer over, loosen the captive screw from the memory module cover, and lift the cover.
   
   

NOTICE: To prevent damage to the memory module connector, do not use tools to spread the inner metal tabs that secure the memory module.

1. If you are replacing a memory module, remove the existing module.
   
   

NOTICE: Handle memory modules by their edges, and do not touch the components on a module.

1. Use your fingertips to carefully spread apart the securing clips on each end of the memory module connector until the module pops up.
   
   
1. Remove the module from the connector.
   
   

NOTICE: If you need to install memory modules in two connectors, install a memory module in the connector labeled "JDIM (Slot 1)" before you install a module in the connector labeled "JDIM2."

1. Ground yourself and install the new memory module:
   
   
   1. Align the notch in the module with the slot in the center of the connector.
      
      
   1. Slide the edge of the module firmly into the connector, and rotate the module down until you feel a click. If you do not feel the click, remove the module and reinstall it.
      
      

NOTE: If the memory module is not installed properly, the computer does not boot. No error message indicates this failure.

1. Replace the cover and screw.
   
   

NOTICE: If the memory module cover is difficult to close, remove the module and reinstall it. Forcing the cover to close may damage your computer.

1. Insert the battery into the battery bay, or connect the AC adapter to your computer and an electrical outlet.
   
   
2. Turn on the computer.
   
   

As the computer boots, it detects the additional memory and automatically updates the system configuration information.

Step 5: Remove a memory or continuity module Continuity modules do not contain memory, but are placeholders to close the memory circuit. Use the following steps to remove a memory or continuity module:

1. Pull out, and then press down on the holding clips that retain the memory modules. The memory modules should rise up slightly out the socket. Figure 5: Opening memory module tabs
2. Pull out the memory or continuity module (for RIMMs) and place it in a static-safe container.

Step 6: Add a memory module Use the following steps to insert a memory module into an empty socket:

1. If RIMMs are being used, keep the following items in mind when purchasing and installing modules:
   • The memory configuration of channel A (the first two sockets) and channel B (the second two sockets) must be identical.
   • Continuity RIMMs must fill any open memory sockets.
   • When a continuity RIMM is required, it should be installed into the second socket.
2. Align the memory module so the small notches on the lower edge line up with the raised marks in the socket. Figure 6: Memory module installation 1 - DIMM (notches farther apart) 2 - RIMM (notches close together)