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Installation of memory module - PC Desktops

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Power down your machine if on unplug power cable. Then open case how ever it opens. Locate the dimm (memory) slots. There will be two ears that hold them in. Make sure both are open -outward from the memory modules. The memory only goes in one way look on the bottom of the memory and see the slot (grooves) in the bottom.
Now look at the motherboard memory slots they will have a bump in the middle of the channel. Match up the groove and the bump and place the memory in the slot. If done correct the only thing left to do is press down on the memory to lock the ears back down. Press down on one side thil the ear locks down, then press the other side down til it locks. The memory should be held tight by the ears if not open the ears and try again. It may take some force to lock into place but not to much. If it takes to much look and make sure you have the memeory in the right way. Close the case and plug everything back in.
Start the system and the bios should and the new ram up if it's an old system. Or if it's ne probably just tell you how much is in it and boot. Make sure to get the right kind of ram for your motherboard. Sorry for making this long but I don't know how much you know about computer hardware. Just wanted to cover everything. Hope this helps. M~

Posted on Apr 29, 2008

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My pc wont boot up, led's 3&4 flash, I have renewed the RAM and the fault is still there, does anyone have a clue what the problem is?


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

May 15, 2016 | Dell OptiPlex 790 USFF

1 Answer

Power light amber with code 3 and 4


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

Feb 18, 2014 | Dell OptiPlex 780 PC Desktop

1 Answer

My dell optiplex gx620 does not start and it shows no. 3 and 4 lights illuminated on its front . what could be the problem.?


One of your memory chips is bad.

Maybe your memory is bad or the memory slot is bad.

Remove the Power Cord, Open the Case and remove one of the memory chips. Set the chip aside then try rebooting the computer. If it boots, then you know the memory chip you set aside is bad so mark an x on it with an ink pen. If it fails to boot then move the chip to the next memory slot and try rebooting. If it fails take the chip out and set it aside, then put the other chip in and try booting it in both slots. If it boots, just to verify that the chip set aside is bad, mark an x on it and put it into the open memory chip slot and try booting.

Diagnostic Lights caution.gif CAUTION: Before you begin any of the procedures in this section, follow the safety instructions located in the Product Information Guide. To help you troubleshoot a problem, your computer has four lights labeled "1," "2," "3," and "4"on the front or back panel. The lights can be off or green. When the computer starts normally, the patterns or codes on the lights change as the boot process completes. When the computer starts normally, the patterns or codes on the lights change as the boot process completes. If the POST portion of system boot completes successfully, all four lights display solid green. If the computer malfunctions during the POST process, the pattern displayed on the LEDs may help identify where in the process the computer halted.
note.gif NOTE: The orientation of the diagnostic lights may vary depending on the system type. The diagnostic lights can appear either vertical or horizontal.

Light Pattern

Problem Description

Suggested Resolution

tools011.jpg
The computer is in a normal "off" condition, or a possible pre-BIOS failure has occurred.
The diagnostic lights are not lit after the computer successfully boots to the operating system.
Plug the computer into a working electrical outlet and press the power button.

tools013.jpg
A possible BIOS failure has occurred; the computer is in the recovery mode.
Run the BIOS Recovery utility, wait for recovery completion, and then restart the computer.

tools012.jpg
A possible processor failure has occurred.
Reinstall the processor and restart the computer.

tools014.jpg
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.

tools015.jpg
A possible graphics card failure has occurred.
  • If the computer has a graphics card, remove the card, reinstall it, and then restart the computer.
  • If the problem still exists, install a graphics card that you know works and restart the computer.
  • If the problem persists or the computer has integrated graphics, contact Dell.

tools016.jpg
A possible floppy or hard drive failure has occurred.
Reseat all power and data cables and restart the computer.

tools018.jpg
A possible USB failure has occurred.
Reinstall all USB devices, check cable connections, and then restart the computer.

tools019.jpg
No memory modules are detected.
  • 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.

tools020.jpg
Memory modules are detected, but a memory configuration or compatibility error exists.

tools021.jpg
An other failure has occurred.
This pattern also displays during System Setup and may not indicate a problem.
  • Ensure that the cables are properly connected to the system board from the hard drive, CD drive, and DVD drive.
  • Check the computer message that appears on your monitor screen.
  • If the problem persists, contact Dell.

tools022.jpg
After POST is complete, all four diagnostic lights turn green briefly before turning off to indicate normal operating condition.
None.

Jun 06, 2012 | Dell OptiPlex GX620 PC Desktop

1 Answer

Hallo to Experts plz any one will help me.dearz my system is gx270 dell.its back lights A&B remain orange while i start p.c plz any one tell me about it plzzzz...


Hi,
This generally signify , that the memory modules are detected in the system, but there is a memory failure.
You can try the following steps
  • If you have one memory module installed, reinstall it and restart the computer.
  • 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.
In case you need a user manual to know how to open the computer tower you go the following link

User manual


Thanks for using Fixya
Proton

Oct 13, 2010 | Dell OptiPlex GX270 PC Desktop

2 Answers

Pc doesn't start properly, and displays a 1 & 3 on the front panel


tools020.jpg
Memory modules are detected, but a memory configuration or compatibility error exists.

May 11, 2010 | Dell OptiPlex 330 Desktop Desktop Computer...

2 Answers

Hi! How can I increase the RAM on my Aspire T310? Can I do it myself? Thanks.


Yes, you can definitely do this yourself. Upgrading RAM is one thing that repair places make much money; however, it takes a matter of seconds to complete.

Your Acer Aspire T310 has two memory slots on the motherboard. Each slot can hold a maximum of 1GB each for a total of 2GB RAM. You should see a great improvement in performance.

To save on a long tutorial, I have included a video link. The type of RAM you need can be found at the following link. Kingston is another manufacturer you could check into also.

Please remember to unplug all cords from your computer and be in a static free environment before upgrading your memory. Good Luck!

http://www.crucial.com/store/mpartspecs.aspx?mtbpoid=269237BDA5CA7304

Feb 26, 2010 | Acer Aspire T310 PC Desktop

1 Answer

How to install memory for T3642 eMachine


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. install_ddr.gif 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.
  • Oct 23, 2009 | E-Machines eMachines T3830 PC Desktop

    2 Answers

    My Dell Optiplex GX520 will not boot. There is no video output and the 3 and 4 diagnostic lights remain on.


    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).

    Jun 17, 2009 | Dell OptiPlex GX520 PC Desktop

    2 Answers

    Doesn't recognise new memory modules


    make sure you have installed it correctly the memory banks (slots) are paired  1 with 2 and 3 with 4 (they should have matching colors)

    Apr 24, 2009 | PC Desktops

    1 Answer

    Ram upgrade


    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 c00571682.gif
    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 c00571683.gif 1 - DIMM (notches farther apart) 2 - RIMM (notches close together)

    Apr 11, 2008 | PC Desktops

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