The Apple Macbook Pro A1990 is a very nice machine but unfortunately it does suffer a problem where the critical components on the logic board that maintain & protect your data frequently are over exposed to the environment causing premature death and frequently loss of data.

Here we restore power and data to a machine that has suddenly died.

Boardview & Schematic software FlexBV - https://pldaniels.com/flexbv5
For many of the tools used - https://pldaniels.com/tools