How To Check If Ram Slot Is Faulty?

How To Check If Ram Slot Is Faulty
Most computer motherboards have between two and four slots for RAM, and if one of these slots fails, your computer won’t see the RAM stick installed in it. Testing your motherboard’s RAM slots requires a working RAM stick and some patience as you check each slot through trial and error.

Check your installed RAM for possible errors. Before opening your tower and handling the memory sticks, use Windows’ built-in memory diagnostic tool to check your RAM. In the Start menu, type “mdsched.exe” with no quotes and press Enter. Select whether you want to restart and check the memory now, or check next time you boot. Check the results when it runs, and if this test returns no errors, you’ve ruled out your RAM as the cause of your problem. Open your computer and check the slots through trial and error. The only way to check your motherboard’s memory slots is to place a working RAM stick into each one and see if your machine boots properly. Remove all RAM sticks and place one you know is functional into the first slot on your motherboard. Boot your computer. If it starts without problems, you know that stick and that slot are good. Power down and move the stick to the next slot. Repeat this process until you find the slot that causes a boot failure. You may want to try your other RAM sticks in the same process, starting with the first slot again. Boot with each remaining RAM in the suspected bad slot to verify that the slot has indeed failed. This also verifies that the remaining RAM is good and not adding to your computer’s memory problems.

Can RAM slot get damaged?

Anything, including the RAM slots can be broken. However, the system display is not related to RAM at all.

Can touching RAM damage it?

Download Article Download Article Installing RAM is a fast, easy way to boost the speed and efficiency of your computer. You do have to take some steps to avoid damaging the RAM while you install it, but we’ll show you what to watch out for in our how-to guide.

  1. 1 Make sure you install the RAM in a clean environment. Whether you’re installing RAM into a laptop or a desktop computer, chances are you’re going to have to open the casing to reach the RAM slots inside. If there are stray liquids or dust or other pieces of debris in your environment, they may get inside and cause damage. Ensure that your RAM modules remain clean by working in an environment that is as clean as possible.
  2. 2 Handle the RAM module properly. Always hold RAM modules by their edges. Never touch the golden electrical components on a stick of RAM because those are where the electrical connections are made. If you touch the gold parts, some of your finger oil will smudge onto them, which can destroy the module. Advertisement
  3. 3 Be careful when inserting the RAM modules into their slots. Always make sure that your RAM is compatible with your motherboard before attempting to insert the module. If the RAM and the motherboard are incompatible, the RAM will not fit and something will end up breaking if you force it.
    • Use firm but not excessive pressure. You will need to press on the RAM, but not so much that the stick bends or warps. Bending can cause the stick to crack or break, rendering it useless.
  4. 4 Minimize the risk of electrostatic discharge. Whenever 2 things touch, there is always an exchange of electrons at the atomic level. Most of the time, this exchange is so negligible that you don’t notice it, but even tiny bolts of static electricity can fry your RAM modules. In fact, any electrical component in your computer has a chance to be damaged by static electricity.
    • Before handling any electrical components, including RAM, always ground yourself to nullify any static charges that may have built up on you.
    • Avoid installing RAM or any other computer component on carpet. Carpets generate tons of static electricity very quickly and you could fry your RAM module without even knowing. If possible, work on a flat, wooden table on hardwood flooring.
    • Keep your body’s electrical potential at the same level as your computer’s while your work. You can do this by always being in contact with the computer’s casing if the casing is metal.
    • Avoid working with RAM and internal computer components when the humidity in the room is low because static charges build up more quickly in low humidity environments. When working with the electrical components of a computer, the ideal humidity falls somewhere between 35 and 50 percent.
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Add New Question

  • Question How do I deliver correctly the Random Access Memory (RAM)? In order to install RAM, push down on both tabs then align the notch with the notch on the socket. Push the RAM stick down with both hands until you here a click, then make sure both tabs are back up into place.
  • Question Can I recreate one of the lost golden lines in the RAM? No, you would need to buy a new RAM stick, or contact the creator if it was a factory error.
  • Question I rubbed the electric contact points of the RAM chip with my finger without knowing what the problem would be, and now my PC is just blinking at the power button. How do I solve this issue? Aditya Telang Community Answer The most likely issue is dead RAM due to a chip getting damaged from the static electricity in your fingers. In that case, purchasing a new RAM is the only option.

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RAM is often upgraded for the purpose of speeding up a computer’s operating system or to replace older RAM sticks that have died. Unless you need to fulfill 1 of these 2 purposes, RAM upgrades are unnecessary. As a small thank you, we’d like to offer you a $30 gift card (valid at Use it to try out great new products and services nationwide without paying full price—wine, food delivery, clothing and more. Enjoy!

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Can RAM defects be repaired?

Spotting the Defective Memory Chip – Every memory module has chips that are arranged from left to right (when you look at rank 1) in accordance with the bits (each bit has a DQ number) of the module. RAMCHECK LX data errors clearly identify the DQ bit/s which are bad and it tells you which chips are being used.

You can easily identify the bad chip from the RAMCHECK LX data errors as follows. The most popular modules (regardless of size and DDR1/2/3 type) use individual chips with x8 data width. Therefore, x64 module uses 8 such chips per rank and ECC (x72) uses 9 chips. The first chip on the left always connects to DQ0-7.

The second chip connects to DQ8-15, the third chip from the left connects to DQ16-23, and so forth. The ECC chip (for DQ64-71), if available, is placed in the middle of the module as the 5th chip, as shown in the following drawing. For example, if RAMCHECK LX reports the error DQ17 bad, you know it is the third chip (DQ16-23) from the left. If you test a dual rank module (one that has chips in both sides), you need to follow the RANK number reported by RAMCHECK LX. If it is RANK 2, you need to turn the module over and follow the chips in a reversed order – DQ0-7 of RANK 2 will be the first chip on the right side when you look at the back side of the module.

Similarly, an x64 data width module (regardless of size) that uses x16 data width individual chips, has 4 chips per rank. The first chip on the left always connects to DQ0-15. The second chip connects to DQ16-31, the third chip from the left connects to DQ32-47, and so forth, as shown in the following drawing.

So if for example RAMCHECK LX reports the error DQ30 bad in RANK 1, you know it is the second chip. If RAMCHECK reports DQ30 in RANK 2, the bad chip will be the second from the right when you look at the back side of the module, as shown here Server ECC x72 modules with x4 chips also have a regular orderly arrangement and your technician can convert the RAMCHECK LX error report to identify the chips. Such module are typically include 36 chips, for two RANKS. The following drawing illustrates how the chips are connected.

The chips marked D0-D4, D10-D13, D18-D22 and D28 to D31 comprise RANK 1. The chips marked D5-D9, D14-D17, D23-D27 and D32-D35 comprise RANK 2 of the module. The vertical chips pairs (e.g D0 and D5, D1 and D6, etc.) connect in parallel, and control by module control lines S0 (for RANK 1) or S1 (for RANK 2).

Chips D0 and D5 connects to DQ0-3 in the front of the module. Chips D18 and D23, which are placed directly beneath D0 and D5 on the back of the module, connect to DQ4-7. Continuing in this order, chips D1 and D6 connect to DQ8-11 on the front side of the module. Server ECC x72 modules with x4 chips and only one rank are much less popular. The arrangement of the chips is similar to the above drawing, with the omission of chips D5-D9, D14-D17, D23-D27 and D32-35. More explicit drawings of modules is available in the JEDEC web site, but the above drawing should be sufficient to determine the chips in most cases.

Now that you know where the defective chip is you’ll have to replace it. Only a technician with component-level repair expertise can repair a memory module. The required soldering/ desoldering equipment is relatively complex, especially with modules and cards made with extremely thin Surface Mount Technology (i.e., devices with BGA or TSOP chips).

You will need a good deal of practice with desoldering techniques. Nevertheless, a few minor problems, which are identified by RAMCHECK, can be repaired with simple tools. A short between an adjacent pin may be caused by a small piece of metallic debris, which is stuck between two chips.

Can you clean a RAM slot?

4. Clean the RAM slots – Do not use anything else but some compressed air to clean out the RAM slots. Keep blowing them out until there is no debris of any kind left inside them. Use a good light source, and make sure they are perfectly clean. This is where I have noticed people making a mistake, by overlooking some small bit of dust or debris and ends up falling back into one or more of the RAM slots.

How do I check RAM slots on my laptop?

Checking if your laptop supports additional RAM – To know if your laptop supports additional RAM, you can run software such as Crucial System Scanner or CPU-Z on your system. Both these software are available for free and they display information about your existing RAM and if extra RAM slots are present in your laptop. If you are using Crucial System Scanner, run it and click on the Scan button. The entire process should take a few minutes and upon completion, the software will display the entire system information along with upgrades you can make. Even CPU-Z works in a similar way, however it does not suggest compatible upgrades and you have to manually look for details of RAM slots, and the kind of RAM installed in the laptop, by clicking the Memory and SPD tabs. These software are accurate most of the times, however it is also advisable to check laptop’s user manual for more accurate information. Some laptops may have non-removable or have RAM built into the motherboard. In such scenarios, upgrading RAM can be a complex task and may require support from the brand’s service centre.