Hi Licker4U,
Lets hope that just showing up there to "help" will get ya laid
I'm not sure there is enough information.
Is it a new power supply or used.
At any rate I would "print out a schematic of her computer power supply wiring" and check the wattage and also see if the fan comes on when you turn on the power. It does not take long for the computer to ask for a re-boot when the fan or the wattage isn't correct.
Good luck and enjoy.
Ben