Hi all,

My PC is a few years old now. It's self-built consisting of a GF3 gfx card,
abit KT7a mobo, an AMD XP 1600 CPU, a monster Vortex 2 chipset soundcard and
it has 512mb PC-133 RAM. It is running winxp pro. I've never had problems
with it until earlier this year.
I moved house and discovered when I tried to set the PC back up, it would
power-up momentarily and then power down. No Beep codes were given. I
checked all connections to ensure a cable hadn't come lose.
Later on the PC powered up and continued to work ok.
After transporting the PC again a few months back, the Problem resurfaced.
This time it occurs on a daily basis. Sometimes it takes around 10-15
power-on attempts for the PC to power-up fully (Rather than power-down after
a random amount of time.) Once the PC is on it can run for days ok, although
eventually it will turn itself off.
This problem has me stumped. It doesn't seem to be a lose cable. It doesn't
seem to be a hardware failure due to no beep code being given, plus
everything functions correctly when it does finally boot. CPU temp is also
within acceptable limits, so that doesn't seem to be the problem either.
I've even checked the power switch to ensure it isn't faulty.
Has anyone come across a problem like this before? I wonder if it is one of
the problems I've mentioned above, but I'm overlooking something simple - or
perhaps a problem with the power-unit itself.
The fact the PC does run perfectly when it can finally be made to power-up
is the most confusing part.

Any help in solving this would be appreciated. I don't want to start buying
replacement parts without narrowing the problem down to a specific area.

Chris