Got my hands on a few spare parts from my cousin and decided to slightly upgrade my old rig. It run with no problem, but as I left for lunch it was frozen when I returned (as in, stuck with the screen, nothing moving). Did a force-reboot and nothing loaded, no BIOS, no video input to the monitor at all, nothing. Not even beeps from the motherboard were heard. Anyone can think of a diagnosys, and a probably solution?
I have to say that what I did change was the Power Source, added a slave IDE and changed the motherboard as I had an ECS motherboard (basically a no-name) before and got a Gigabyte one from my cousin.
Here is a vid of the PC "starting" if it may help you: