Hi

Can I use a power supply from a old AT p200 (output 200W), in a fairly new ATX(?) HP?  Are the connectors to the mother board and drives the same?

A friend has a "HP Pavilion XL844" computer she bought a year ago.  This weekend we had a thunder storm and when she got home her computer would not work. It was plugged in to the wall power outlet and the cable (internet).
When you turn it on nothing happens, the fan does not work, no lights.  The monitor goes on but just stays black.  Ive told her its proably no good but she wants me to look at it any way.  My first thought is the power supply must be bad. My question is can I take the power supply from an old AT machine (p200) that I have and use it in her ATX machine?  Her power supply reads "output 185W", my old one says "200W".  Thank you.

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