I have recently rebuilt a computer using a selection of parts put together with advice from a very good supplier, so I don't think that I have any compatiblity problems. I have had quite a lot of experience in rebuilding computers and never had a problem before. On this occasion, the rebuilt computer refuses to fire up. I've checked all the connections to the motherboard and can find nothing wrong. Could the power supply be at fault? It was working OK before I started, but I can't think of anything else. Any suggestions would be appreciated.
I must admit although I have scratchbuilt quite a few PC's in the last 20 years I tend to buy a Novatech mobo with processor & ram pre fitted & tested - today's machines seem to be more picky than the old 'uns.
On some motherboards you have to clear the CMOS before it will boot. Look in your manual to see if you need to move the jumpers to do this or try removing the CMOS Battery for a few seconds and then replace it. Make certain that the machine is not plugged up to the mains (even if switched off) before doing either of the above.