+ 0 Votes You either have a short on the board or your power supply cable. Peconet Tietokoneet-217038187993258194678069903632 5 years ago Get another power supply and test that on the board, if it is still the same then it would be the motherboard that is at fault here. Please post back if you have any more problems or questions. If this information is useful, please mark as helpful. Thanks. + 0 Votes Seen this before mjd420nova 5 years ago One of the biggest problems I've seen on home brew units is the shorting of the power supply. Remove the motherboard and look at the chassis. Replace the standoffs that the MOBO mounts to with nylon or plastic ones. Any one of them can short the power supply and stop the POST.