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A+ Certification Study Guide: Diagnosing & Troubleshooting

Memory (Cont...)

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Computer boots but doesn't recognize all the installed memory.

When the computer boots, a part of the boot process counts memory. On some machines the count appears on the screen and on others it is hidden. If the computer counts to or lists a number less than the memory you installed, it means that the computer hasn't recognized all the memory.

Sometimes the computer will recognize only a part of a module. This indicates using the wrong kind of memory. For example, if your computer accepts only single-banked memory and you have installed dual-banked, the computer will read only half the memory on the module. At times the computer will accept only modules containing memory chips with specific organizations. For example, the VX chipset does not work well with 64 Mb chips.

 
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