I am trying to add additional memory (256m) to a Presario 900 Notebook.
Using PNY PC2700 (as recommended at their website) modules, the computer
goes into safe mode whenever the original and additional memory is inserted.
It boots normally if either the new or old modules are inserted. Tried
buying another new module and inserting them without the original, but same
situation. It seems like something needs to be set to allow for the extra
memory?

Does it require only PC2100 memory? Is there something about the 900 that
needs to be set to recognize the extra memory? Does anyone know of any
peculiarities with it and memory? Is the memory proprietary?

Any thoughts?
Clark