So recently I have been trying to upgrade my cpu and power supply. When I put in the new i7 cpu and 600w psu, an issue occured where my computer would start up for about 20/30 seconds and then shut off and attempt to start up again. During this time, the monitor would not display information and any usb devices wouldn't work. I switched out the new parts with my old psu and cpu the error still occured. When testing things out, I used my current gpu (gtx-1060), an older gpu (gtx-750), and the onboard graphics for both the old/new cpus and psus. I have tried cleaning the contact areas for the cpu, ram, and anywhere that the psu conects to as well as removing the battery for few minutes. Is there any thing else that I can do to fix this issue or is my motherboard dead?