I ordered a new PSU and it'll turn on my old PC but my not my new one.....Can it damage anything!?!?!??! my PSU died when my PC was turned OFF!!! did it damage anything!!!??
It could have damaged your mobo but this is remote. Have you checked your PC with other PSU? Is it working? Have you checked the mobo physically? Are there any burnt/damaged signs/spots? It is strange that PSU died when you turned off the PC.
Pl remove the battery cell of the mobo and unplug all the cables/connectors. After some time plug in the cell. Now using only one RAM and CPU all other things disconnected, try to power on the PC.