When the power came back on, there was probably a power spike that jolted some
part of the computer. I'll assume that the power supply is bad and needs
replacing. If the power supply is of good quality, a fuse inside blew out, and
the rest of the hardware is OK.

If replacing the power supply does not do it, you're faced with replacing
components one at a time until the system runs.

Modern Presarios use standard power supplies, so testing it with another power
supply is the best step to take... Ben Myers

On Wed, 29 Nov 2006 12:42:14 -0500, "Derek Lawler"
wrote:

A few weeks ago I gave some friends a 4 yr old Presario and hooked it up for
them with a Sony monitor. They had gotten on line and were using it
successfully for a couple of weeks when their power went out. When the
power came back on the computer showed a black screen. Nothing was coming
up.
What I would like to know is: if a computer CPU is damaged by an electric
surge, what components are usually damaged and unrepairable? Thanks for
your response.
Derek