HEEEEELLLPPPP

I have a computer that was already bought prebuilt. While cleaning it I had broken the pins on the graphics card insert and got a new motherboard (asus prime z390-a). I unplugged everything and installed the new motherboard but when turning it back on it wouldnt stay on for more than a split...

Good evening champs. I want to present you the pc i am going to build and i would like from you if you could tell me if it's enough or i might need to buy some other parts. CPU i5 4460 GPU GTX 970 MSI TWIN FROZR V MOBO Gigabyte H97 D3H ATX HDD 1TB Western or Seagate 7200 64 MB Buffer RAM 2x4GB...