quoteInteresting replies, but you make it seem so easy to figure out which part isn't working. If it just doesn't start you have no idea. It could be the processor, it could be the MB, it could be the graphics card. It could be the power supply isn't working. And constantly returning items is a total pain in the ass, you guys must have high levels of patience to risk all that money hoping they send you the correct part back or that the new replacement one still adapts to your MB.
possible hardware that can fail, and how to test them:
PSU: simple to test. if it is dead, unplug all cables, but keep it plugged in to the wall socket. get the 24 pin motherboard power cable (the largest one), and create a circuit with the green wire, and any of the black wires (such as with an unfolded paper clip...anything metal...its safe to touch)
DVD: well youll know if this doesnt work if it isnt reading your disks, opening its tray, or lighting up.
HDD: if you hear strange sounds from the hard drive, see very slow loading times, or windows just isnt booting up, this is most likely at fault. motherboard could be another possible problem source, but that can be verified by trying different SATA ports on the motherboard. if none of the ports work, its the hard drive. if only one doesnt work, its the motherboard.
CPU: almost never is a problem, but if you suspect heat related issues, take out the CPU and see if there are any burnt contact points on both the chip, and the socket.
Video Card: test this in another computer if you suspect the video card is the problem. if you have onboard graphics, remove the card, and connect the monitor to the onboard display port. if it works, the video card is the problem. if not, something else is the problem...likely either the motherboard or CPU
RAM: usually you will have two or more sticks of RAM. highly unlikely that all sticks would be dead, so remove all but one stick of RAM and see if it works. if not, try another stick of RAM. if it still doesnt work, try different slots on the motherboard with different sticks of RAM. if none of the sticks of RAM seem to work, the motherboard is more likely to be the problem.
Mobo: the motherboard is one of the most likely components to fail, along with the PSU. the mobo is difficult to verify directly as the cause of your problem, so you have to rule it out by the process of elimination. if you can verify all the other parts are working, then it will be the motherboard. of course, you might rule it down to the CPU and motherboard, and the CPU is also difficult to determine whether or not it is dead, but the probability of the CPU being the problem compared to the motherboard is astronomically small.
quoteIt's your own money so you'd have to just return everything unless the return deadlines are passed (Which they always are because the sites give you like 20 minutes until it expires) in which case you have a $200 graphics card sitting around being useless.
you can RMA anything as long as it is within the warranty, which is usually a few years. also...20 minutes? wut?