But everything else well what's listed at least isn't or may not be. The Video Card could be made by anyone with that chip set so the Makers Name helps.
The Power Supply is another story not a Name Brand but a No name brand that is overrated for what it is unless Coolmaster is a Model and not the makers name. For any product you need to look at who actually made it.
While Faulty parts are not uncommon what isn't common is that have a unit work after assembly and then stop several hours latter.
Generally if you have got faulty parts they do not work out of the box. however having something go bad isn't unheard of either it all depends on where the parts where purchased.
To Trouble Shoot you need to check the individual Components in another system all except the Power Supply should be fitted one at a time if possible and tested so that you know that they are good. You can also remove all but 1 Stick of RAM and try again to see if it will start up.
AS the Power Supply is starting but not running if I had to guess I would say M'Board as this isn't providing the signal to the PS to keep it running but that is just a Best Guess and shouldn't be considered as the be all and end all. It could be the CPU has failed and not providing anything to the M'Board to allow it to run.
Or the Power Supply may have gone bad and no longer be producing enough current to run the M'Board. You could try testing just the M'Board, CPU and Video Card with no power Hungry devices plugged in.
Did you plug in a Power Lead to the Video Cards Power Socket [if there's one on the Video card] if you didn't that would take out a M'Board.
Col
Post back if you have any problems
Col