Solve : can't use memory's slots #1 and #2?

1.	Solve : can't use memory's slots #1 and #2?
Answer» When I began to upgrade a PC decided to add 128M memory to the 64M exixting, performing 192M. When I started COMPUTER, only 64M was read. Next I exchanged 64M with 128M, I mean, the former gone to the #2 slot, the later to the #1. Now the reading was 128M Affraid of some kind of lack of compatibility, I changed the 64M memory for a 128M one, to acchieve a grand total of 256M Reading: only 128M!! :-/ It seems to me that only the slot #1 is working, or is seen by the mother board I have read something about memories X BIOS, but I do not know exactly how to use this. I would like of some kind help, please PC uses a M748MRT M.Board, pentium II 450M, FSB 66/100, up to 3x DIMM memory, MAXIMUM of 768M Thank you in advanceThere is a difference between low density (older chips) and high density (those that are being made today) chips. Sometime the HD chips don't work at all, or they cause an incompatibility with what is already in there. Also, the PC Chips board is always suspect, and may just need to be replaced. So let us know the history of the board AND the RAM and how you know it is compatible.Please: What kind of information should I give about this MB and memory ? [smiley=dankk2.gif]DLoad and run Everest Home and post a log here...I have Dloaded Everest (is it the same Aida??) and saved it in a CD. I'm not in front of the "victim". As soon as I see it I'll run Everest and will post the logfile. Thanks for now [smiley=bath.gif]As mensioned before, I' sending a log file after Everest inspection. I hope this can bring some help. Thanks We'll leave the light on...I'll stick with my first response. For the sake of clarity for me: do you think there is a problem with the Mother board? Everest seems to be a very powerful tool, but I do not know how to see the true tru it... I mean: what was seen by you so you could emit this opinion? (I'm trying to learn more) Regards [smiley=shocked.gif] [smiley=shocked.gif] Quote There is a difference between low density (older chips) and high density (those that are being made today) chips. Sometime the HD chips don't work at all, or they cause an incompatibility with what is already in there. Also, the PC Chips board is always suspect, and may just need to be replaced. So let us know the history of the board AND the RAM and how you know it is compatible. Here is what Crucial recommends: http://www.crucial.com/store/listparts.aspx?model=M748LMRT You never did tell where the RAM came from that you added. Was it a NEW purchase? I surmise that it is high density RAM and is not being USED correctly. It is an old board and a PC Chips board, so a physical malfunction is VERY possibvle also. So what are the details about the RAM you got? Make and model? New? If not, known to work? The 2 memory modules are new, made by Samsung, PC100, 128M each. No matter wich I put at slot #1, the reading is always the same. I saw specifications below at crucial. How to know if memories are nonECC and unbuffered?? :-? 168-pin DIMM Banking: 3 (3 banks of 1) Chipset: Xcel 2000 Error Detection Support: Non-ECC only Max Unbuffered SDR SDRAM: 768MB Module Types Supported: Unbuffered only SDR SDRAM Frequencies: PC100 and PC133 Supported DRAM Types: SDR SDRAM only Max Component Density: 128If it were ECC and buffered you would have paid a lot. The fact that it was new indicates it is probably high density which may be the issue. What if you put the 2 new sticks in slots 2 & 3 and leave slot 1 (nearest the processor) empty?In fact I made it! Computer did'nt even started! My new idea now is to buy a 256M piece, put it at slot#1, getting off the 2 OTHERS. If MB reads it correctly , will be a happy end...[smiley=evil.gif]I have a 256M DIMM memory instaled, seen by MB. In fact for some reason slots #2 and #3 are not seen. But: PC is working fine, that's what matters!! [smiley=vrolijk_26.gif] [smiley=vrolijk_26.gif]Good for you then.

Answer»

When I began to upgrade a PC decided to add 128M memory to the 64M exixting, performing 192M. When I started COMPUTER, only 64M was read. Next I exchanged 64M with 128M, I mean, the former gone to the #2 slot, the later to the #1. Now the reading was 128M
Affraid of some kind of lack of compatibility, I changed the 64M memory for a 128M one, to acchieve a grand total of 256M
Reading: only 128M!! :-/
It seems to me that only the slot #1 is working, or is seen by the mother board
I have read something about memories X BIOS, but I do not know exactly how to use this.
I would like of some kind help, please
PC uses a M748MRT M.Board, pentium II 450M, FSB 66/100, up to 3x DIMM memory, MAXIMUM of 768M
Thank you in advanceThere is a difference between low density (older chips) and high density (those that are being made today) chips. Sometime the HD chips don't work at all, or they cause an incompatibility with what is already in there.

Also, the PC Chips board is always suspect, and may just need to be replaced.

So let us know the history of the board AND the RAM and how you know it is compatible.Please: What kind of information should I give about this MB and memory ? [smiley=dankk2.gif]DLoad and run Everest Home and post a log here...I have Dloaded Everest (is it the same Aida??) and saved it in a CD. I'm not in front of the "victim". As soon as I see it I'll run Everest and will post the logfile.
Thanks for now [smiley=bath.gif]As mensioned before, I' sending a log file after Everest inspection. I hope this can bring some help. Thanks We'll leave the light on...I'll stick with my first response. For the sake of clarity for me: do you think there is a problem with the Mother board? Everest seems to be a very powerful tool, but I do not know how to see the true tru it... I mean: what was seen by you so you could emit this opinion? (I'm trying to learn more)
Regards [smiley=shocked.gif] [smiley=shocked.gif] Quote

There is a difference between low density (older chips) and high density (those that are being made today) chips. Sometime the HD chips don't work at all, or they cause an incompatibility with what is already in there.

Also, the PC Chips board is always suspect, and may just need to be replaced.

So let us know the history of the board AND the RAM and how you know it is compatible.

Here is what Crucial recommends:

http://www.crucial.com/store/listparts.aspx?model=M748LMRT

You never did tell where the RAM came from that you added. Was it a NEW purchase? I surmise that it is high density RAM and is not being USED correctly.

It is an old board and a PC Chips board, so a physical malfunction is VERY possibvle also.

So what are the details about the RAM you got? Make and model? New? If not, known to work?
The 2 memory modules are new, made by Samsung, PC100, 128M each. No matter wich I put at slot #1, the reading is always the same. I saw specifications below at crucial. How to know if memories are nonECC and unbuffered?? :-?

168-pin DIMM Banking: 3 (3 banks of 1)
Chipset: Xcel 2000
Error Detection Support: Non-ECC only
Max Unbuffered SDR SDRAM: 768MB
Module Types Supported: Unbuffered only
SDR SDRAM Frequencies: PC100 and PC133
Supported DRAM Types: SDR SDRAM only
Max Component Density: 128If it were ECC and buffered you would have paid a lot. The fact that it was new indicates it is probably high density which may be the issue.

What if you put the 2 new sticks in slots 2 & 3 and leave slot 1 (nearest the processor) empty?In fact I made it! Computer did'nt even started!
My new idea now is to buy a 256M piece, put it at slot#1, getting off the 2 OTHERS. If MB reads it correctly , will be a happy end...[smiley=evil.gif]I have a 256M DIMM memory instaled, seen by MB. In fact for some reason slots #2 and #3 are not seen. But: PC is working fine, that's what matters!! [smiley=vrolijk_26.gif] [smiley=vrolijk_26.gif]Good for you then.

Solve : can't use memory's slots #1 and #2?

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