Hi we have picked up an old hp pavilion t3000 desktop for our daughter to muck around with and basically get used to I.t. , we're now a bit excited as it almost seems to be working, I'm only a novice myself .
What I've noticed is when this four pin type connection is unplagged everything comes on and stays on except the monitor, however if this cable is plugged in, the computer comes on for about ten seconds including a hp blue screen on the monitor with some options in the bottom right coer to press esc,f10, and others , but everything dies after ten seconds.
Can't seem to attach pic, sorry