Hello, I have a gigabyte h55m-udh motherboard and a i5-650 LGA1156 cpu. the problem I'm having is my PC just wont turn on. when I press the on button, the fans turn for about a second, then everything cuts out. I've sent my mobo back to get it checked out/repairs, but they returned it to me saying that there's nothing wrong with it.
I've also bought a new PSU, so that can't be the problem, and doubt it could be the RAM as I've tried it with 1 stick and no sticks and I get the same result.
It's strange because it was working fine for a while, but then suddenly it stopped and now I can't get it running again.
I've also cleared the cmos by resetting the battery, but still nothing.
ARGH!!! this is so frustrating!
More about :conflict h55m ud2h motherboard 650 cpu
aplologies for the late reply.
o1die, the power supply brand is Antec TruePower New 650W Modular PSU. I have tried with other power supplies, but this is the one I just recently bought.
davcon, sorry, I don't know what that means! The strange thing is that it was working fine for almost a year, then decided one day "oh, I don't fancy working anymore, I'm going on strike" and presented this problem.
PS, many thanks for your responses and in advance for future ones.
I doubt you need a newer bios file. The original one should support the 650. I would try your old power supply first. Some power supplies simply don't work with certain boards. I would also lift your board out and do a bare post on wood or cardboard with just one stick of ram. You can touch the power switch cluster of pins with a screwdriver to power up after everything else is connected. Good luck.
Already done it o1die. Even tried with no sticks of RAM, reseated the CPU. I did notice a slight irregular on/off pattern when I took the 4-pin 12V out and just tried it with the 24-pin - it still switch on then off after a split second, but kept looping this process. When I plugged the 4-pin back in, the looping process stopped and only on/off once when I pressed the power switch.