Hi, I have my brothers system which is causing me a major headache. Awhile ago his floppy drive stopped working so he bought a new one. He put it in the wrong way round as regards the cable and the drive light stayed on. He took it out again and re-inserted it the correct way but it does not work. His PC has started to hang and shut itself down and the memory doesn't register as being present though he gets no beeps to indicate this. The hard drive was next to stop working, just getting the BIOS screen. Now this has stopped and he gets nothing at all and nothing sounds like it is firing up at all. You can hear, just faintly the power supply coming on and that is it. I think it may be the power supply, or maybe the motherboard. Haven't got the equipment to test every thing, or a compatible system to test each individual component. Tested the Hard drive on mine and that seems fine. Any idea's anyone? Cheers P.S. It is an old system P3 933 mhz memory is 133. If it were the M/B, do any of the latest M/B's support this type of memory and processor?