A friend inherited a Compaq Presario 4409CL with dead power supply.

It looks like a standard ATX power supply. Inside the case we found
that the board is marked with Delta Electronics DPS-250KP-2B

Neither of us is a "power supply expert" so would appreciate any help.

Am thinking it would be most cost effective to get a 3rd party power
supply.

Had been told that Delta made reliable power supplies so am guessing
from what I have read so far that it was just too small.

Steven