New
#11
Please make sure you tested your motherboard (+CPU+integrated GPU+1 stick of RAM) with another PSU.
If that fails, the board is dead, as said above.
It's very very rare, but boards can die too (PSU and hard drives die at least 1000 times more frequently imho). Check the capacitors to see if they are damaged (if they are, the capacitor has to be replaced, which involves someone with soldering skills and a new capacitor with the same stats as the dead one. Stats are written on its surface).