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Not all my new memory is recognized.

Question

I am trying to install a 64meg SDRAM DIMM in my system.

However, it only recognizes it as 16meg. I have followed all instructions in the motherboard manual, and the jumpers are set properly.

Help!

Adam

Answer

This question was answered on June 30, 1999. Much of the information contained herein may have changed since posting.

There are three common reasons why you might have memory problems. First, improper configuration (motherboard settings, jumpers) or the wrong type of memory for your motherboard. Second, incorrect installation and third the memory itself is defective.

You need to check the motherboard documentation concerning just what types of memory are supported by your machine. Not all types of DIMMs are supported by all motherboards. For example, EDO (extended data out) memory may not be a supported format. Many machines also do not like mixing different types of memory such as EDO and FPM. If other memory modules are installed again check the documentation for compatability issues. There are two types of SDRAM circuitry, 2-clock and 4-clock. The clock types specify how the memory chips are accessed on the memory module. You need to have the right clock type for your motherboard so again check the documentation.

Try reseating your memory module, trying not to touch the contacts and make sure it is seated completely. If everything else checks out it may be a defective module and you will need to return the store were you bought it for help.

Author

Posted by Ken of Data Doctors on June 30, 1999

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