New memory not recognized.

[mofinfan]

I have a P150 running Win ME. I changed from 32MB of SIMM to 128MB DIMM. Now when I power up the computer it beeps continually until I press reset. Then it will boot up normally, but says it only has 32MB of memory. I have entered CMOS and saved with no changes. I have reseated the memory several times. I have searched the CMOS for some type of memory setting. The motherboard is a few years old. But, you would think that it should recognize 128MB. Also, I have changed the jumpers from EDO to SDRAM. I do not know what else to try. Any suggestions would be appreciated. Thanks

[mjc]

Even if the board is only a couple of years old the technology may be much older, without the model and manufacturer or the manual there is no way of knowing for sure if 32MB is limit per slot. If you can get the BIOS ID string (visible at boot up; can use the <pause> to halt the Post so you can read it) you can go to Motherboard Homeworld (http://www.motherboards.org/) to try to find info about it.

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mjc
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[Paleo Pete]

Continuous beeps usually mean either memory or motherboard problem. Since you know the board is good, and the memory should be, in this case it sounds like a bad connection. Exact same thing this machine did when I switched to DIMM from SIMM.

Pull and reseat the memory chip(s) a few times and see if it works. I had to do mine 5 times before it worked right. The board is old and the memory slots have never been used, so you have dust on the contacts. Possibly residue from smoking or other sources as well, so the memory chips aren't contacting the slot very well.

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[Bill Russell]

Motherboards of your vintage were often limited to 32mb per slot, and
sometimes only 16mb if the module is single-sided. If you have an Intel
chipset on the mainboard and like speed, I wouldn't go beyond 64mb ram
or there'll be a cacheing penalty.