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I tried to replace a 16MB RAM with a 64 MB RAM in a Pentium I but the computer only detects 16MB of RAM.
I put the 16MB back in and replaced the 32MB with the 64MB and the computer only detected 48MB total RAM.
How do I get the computer to recognise the full size of the RAM?
Discussion is locked
that that is as much ram as that PC can hold...like how PCs nowadays have a max of 2 GB of ram
I am unsure of the max RAM for my computer bu if I remove both 16MB and 32MB sticks and put the 64MB stick in the computer only recognises it as a 16MB RAM
Believe it or not, 16M was large back then and 64M sticks were quite rare.
Bob
My computer currently has 48MB and only has two slots.
I can't find where to change the settings to detect the RAM in CMOS, which I have been may need to be done.
My computer is an IBM APTIVA, running WIN 98 SE, with 2MB Video memory connected straight to the motherboard, no PCI card, AGP slot not present.
6GB of HDD space.
If you were to go here.
www.crucial.com
and plug your make/model into their memory finder it might come back and tell you some interesting stuff.
See
http://www.ibm.com/support/us/
Drill down for manual.
At this age system may only read 48MB memory.
(32 + 64 =4
Or a correct combination of memory sizes are needed.
(64 = 16)
Bill
.
My computer is an IBM APTIVA but I do not know what model. The computer does not say, not in CMOS, systrem properties or even on the case.
I do not have the manual either.
If the computer were to only have 48MB max RAM, which it may or may not, then why would it only detect 16MB of the 64MB Ram when only one 64MB Ram is installed, and not 48MB?
Because the socket and the electrical signals that address the memory only support 16M of the 64M stick.
That's as simple as I can state it.
Bob
But when the 16MB and the 64MB RAMs are in it detects 32MB from the 64MB, more then 16MB like you said the computer was only capable of reading from a 64MB RAM
IBMs tend to mark thier systems very well with what they are. Check to see if decal/sticker on backside. If none, remove cover as some system used a 2nd cover over the backside and/or remove just to access the insides. Inside, should be a large decal showing the specs and/or jumper setting, etc, plus maybe the ram setup possibilties. If none of this works, then visit IBM support website. I suspect offhand, your system uses ECC type memory, and unless *all* are similar won't work unless or won't be recongized. Also, being an old system, there are ram limits that such systems supported back then. Last, it maybe possible once you truly ID the system that a bios update(s) may help further in improving ram acceptance. Also, IBM labels thtier ram, look for an FRU# sticker, then again under IBM support research that number to spec what it is and thus all ram should be similar. Same for the IBM mtrbd. itself as a last resort to ID system it is used in.
tada -----Willy
The IBM APTIVA is model 2161-E64, S/N: 90 A8PX1, I just never took notice of the sticker under the slide down cover.
16MB of RAM is specified on the sticker so a 32MB RAM was later installed.
The maximum RAM supported by the IBM Aptiva 2161-E64 is 64MB. RAM type- SDRAM DIMM 168pin.
I found this on www.ramfinder.com
So why won't the computer recognise my 64MB RAM?
Going to provide you with some links I don't have the writting skills to fully explain how the M/B design affects memory.
Maximum System Memory
Memory Banks and Package Bit Width
System Memory
Bill
Just guessing here...
If your system has 2 ram slots and the max. supported ram is 64mb, then that's 2-32mb ram sticks when fully populated. Of course less mb ram was common like 4, 8, 16mb for win95 based systems. Once, win98 got into the picture, newer systems supported w/new h/w got beefer ram installs. This was a growing acceptance as the computing world moved on.
tada -----Willy 
You just can't accept that there are incompatible parts out there. And that you have such.
The RAM is compatible, the computer just maxes out before the full RAM is recognised. Another 32MB would work fine as Willy said.
as mentioned by others....
Look again on the back of the cover. It may list proper memory size and postion. As a WAG 2/32 for 64 -> 16/32 for 48 -> 2/16 for 32.
Found manual
Tho it does not list the memory configuration. Nor was I able to find anything at IBM.
Bill
The sticker only tells me the original stats of the computer, not how much it can handle
Go to: www.crucial.com. They have a program which will scan your PC and tell you exactly what RAM is right for your machine.
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