Memory on OptiPlex 5040 SFF

Apologies for the delay getting back to you.

 tried with same stick all 4 slots, only 1 and 2 works.

 

Sorry but what I meant was a stick in each slot at the same time, please see my canned info below for as to how to properly test RAM and the memory slot themselves, note the highlighted in red and blue.

 

How to physically test your RAM.

 

The following checks require the computer case to be opened so take the following safety precautions 1st, disconnect the power cord from the wall socket, press the case power button for twenty seconds or so to get rid of any residual charge in the system, take anti static precautions before touching anything inside, you can do this by touching a bare metal part of the case or PSU or if a notebook by touching a household radiator or associated copper feed pipe.
 

Have a pencil and notepad to hand.

 

Remove each stick of RAM and blow out the memory slots.

 

Insert the first stick of RAM in memory slot A2 which is the second slot away from the CPU, reconnect the power and in the case of a desktop computer the video to screen cable and the keyboard.

 

Power up the computer and see how it goes.

 

Make a note of the results.

 

Repeat the procedure until the first stick of RAM has been tested in each memory slot and the results written down.

 

Remove the first stick of RAM and put it to one side on top of a piece of paper with the number one on it for identification purposes.

 

Repeat the procedure with all RAM until each stick has been tested in all slots, the results written down and the sticks identified numerically.

 

Now the really long winded part;

 

If no individual stick of memory or slot on the MB has an obvious problem all of the above needs to be repeated but this time by running Memtest 86 for each stick of RAM and in each slot on the MB and for at least 4/5 passes, for some reason that many of us cannot explain a stick of RAM may work in one slot on a MB but not in another.

 

Please note that some MBs (motherboards) will not boot unless there is RAM in slot one so please provide us with your motherboard details, brand, model name/number and any revision number, these details may be found by the CPU, between the PCI slots and/or around the edge of the motherboard, once we have the MB details we can look for the user manual.

 

 

Dell computers are one of the most well known for not booting unless there is RAM is memory slot 1

The specs for your computer at Dell here say that only 4 and 8GB RAM modules are supported and the maximum amount of RAM supported is 16GB, this regardless of whether or not the MB has four slots

Please note that your MB only supports low voltage DDR3L so any RAM that requires 1.5V will not work.

An example here of the RAM that would be needed, note that the item in the pic is the correct 1.35V and not the 1.5V that can also be purchased from the same merchant.

PhillPower2 - I already told the OP this in Post #6 - doesn't seem to sink in though.

PhillPower2 - I already told the OP this in Post #6 - doesn't seem to sink in though.

Aye did read it but nothing like a bit of confirmation and an example of the type of RAM that is needed, interestingly the OP visited the forums yesterday but left no update 

Apologies for the delay getting back to you.

 

 tried with same stick all 4 slots, only 1 and 2 works.

 

 

Sorry but what I meant was a stick in each slot at the same time, please see my canned info below for as to how to properly test RAM and the memory slot themselves, note the highlighted in red and blue.

 

 

How to physically test your RAM.

 

The following checks require the computer case to be opened so take the following safety precautions 1st, disconnect the power cord from the wall socket, press the case power button for twenty seconds or so to get rid of any residual charge in the system, take anti static precautions before touching anything inside, you can do this by touching a bare metal part of the case or PSU or if a notebook by touching a household radiator or associated copper feed pipe.
 

Have a pencil and notepad to hand.

 

Remove each stick of RAM and blow out the memory slots.

 

Insert the first stick of RAM in memory slot A2 which is the second slot away from the CPU, reconnect the power and in the case of a desktop computer the video to screen cable and the keyboard.

 

Power up the computer and see how it goes.

 

Make a note of the results.

 

Repeat the procedure until the first stick of RAM has been tested in each memory slot and the results written down.

 

Remove the first stick of RAM and put it to one side on top of a piece of paper with the number one on it for identification purposes.

 

Repeat the procedure with all RAM until each stick has been tested in all slots, the results written down and the sticks identified numerically.

 

Now the really long winded part;

 

If no individual stick of memory or slot on the MB has an obvious problem all of the above needs to be repeated but this time by running Memtest 86 for each stick of RAM and in each slot on the MB and for at least 4/5 passes, for some reason that many of us cannot explain a stick of RAM may work in one slot on a MB but not in another.

 

Please note that some MBs (motherboards) will not boot unless there is RAM in slot one so please provide us with your motherboard details, brand, model name/number and any revision number, these details may be found by the CPU, between the PCI slots and/or around the edge of the motherboard, once we have the MB details we can look for the user manual.

 

 

 

Dell computers are one of the most well known for not booting unless there is RAM is memory slot 1

 

The specs for your computer at Dell here say that only 4 and 8GB RAM modules are supported and the maximum amount of RAM supported is 16GB, this regardless of whether or not the MB has four slots

 

Please note that your MB only supports low voltage DDR3L so any RAM that requires 1.5V will not work.

 

An example here of the RAM that would be needed, note that the item in the pic is the correct 1.35V and not the 1.5V that can also be purchased from the same merchant.

Hello sir, sorry for late, I had some personal problems. I had only one moduse/ stick of ram. I have tried to put in slot 1, works, then in slot 2, works, but in slot 3 and 4 doesnt work. My motherboard have 4 slots, 2 white and 2 black. From processor to end of motherboard I have, 1, 2, 3, 4, slots, in this order. I try my single module of ram in slot 1 and 2 and works, but when I try that single module of ram in slots 3 and 4, doesnt work, pc not boot, only power led blink, but when I put it back in slot 1 or to my ram module, pc works.

It is, start from procesor: slot 1 - black, slot 2 - white, slot 3 black and slot 4 white. My pc is dell 5040 SFF, not MT, my motherboard suport 32 gb, the MT support 16 gb, I ask dell support about it and they said that. Thanks

PhillPower2 - I already told the OP this in Post #6 - doesn't seem to sink in though.

Hello, sorry for late reply, I had some personal problems. What do you mean by "doesn't seem to sink in though."? My english isnt so good. Thanks

 

PhillPower2 - I already told the OP this in Post #6 - doesn't seem to sink in though.

 

Aye did read it but nothing like a bit of confirmation and an example of the type of RAM that is needed, interestingly the OP visited the forums yesterday but left no update 

 

Hello, sorry Had some personal problem, thats why I did not access this forum. Now I have 4 gb ram, model MT8KTF51264AZ-1G9P1. 

And this is motherboard Thank you guys.

When there are two sticks of RAM they should be in slots one and three, have you tried putting RAM in these two slots at the same time as has already been mentioned more than once.

Both sticks must be the correct spec else the system will not boot.

When there are two sticks of RAM they should be in slots one and three, have you tried putting RAM in these two slots at the same time as has already been mentioned more than once.

 

Both sticks must be the correct spec else the system will not boot.

Hello, I said I have only 1 module ram, not two. Sorry if my english isnt good, I will give up ... Nobody listen me, you said what was mention more than once, but I mention from begining that I have only one module of ram, and nobody care about what I said, but you said I didnt pay attention about what was mentioned more than once ... What both sticks, guys, do you read what I said, I have only one module ... And works to boot with one module of ram, in slot 1 and 2, but not in 3 and 4. Thanks

Your English is not bad but sorry to say you are the one that is not listening.

Dell computers are one of the most well known for not booting unless there is RAM is memory slot 1

 

You must have RAM in slot one or two else the computer will not boot and when there are two sticks of RAM they must be in slots one and three or the RAM will not work in dual channel only single channel which would be 50% of the performance of dual channel.

The below is the rest of my reply #16;

The specs for your computer at Dell here say that only 4 and 8GB RAM modules are supported and the maximum amount of RAM supported is 16GB, this regardless of whether or not the MB has four slots

 

Please note that your MB only supports low voltage DDR3L so any RAM that requires 1.5V will not work.

 

An example here of the RAM that would be needed, note that the item in the pic is the correct 1.35V and not the 1.5V that can also be purchased from the same merchant.

 

Your English is not bad but sorry to say you are the one that is not listening.

 

Dell computers are one of the most well known for not booting unless there is RAM is memory slot 1

 

 

You must have RAM in slot one or two else the computer will not boot and when there are two sticks of RAM they must be in slots one and three or the RAM will not work in dual channel only single channel which would be 50% of the performance of dual channel.

 

The below is the rest of my reply #16;

 

 

The specs for your computer at Dell here say that only 4 and 8GB RAM modules are supported and the maximum amount of RAM supported is 16GB, this regardless of whether or not the MB has four slots

 

Please note that your MB only supports low voltage DDR3L so any RAM that requires 1.5V will not work.

 

An example here of the RAM that would be needed, note that the item in the pic is the correct 1.35V and not the 1.5V that can also be purchased from the same merchant.

 

I'm really not sure what if anything else can be added to make things any more clear.

 

 

Hello, thanks for help. I will buy another 4 gb module and I will try like you said and came back to you, take care till then, have a nice day.