GTX780 killed my pc

[phoneman483]

Recently built a new pc, bought a asus prime x470-pro mb and did not buy a graphics card because i was under the ssumption it had onboard graphics. Well, as it turned out i bought the wrong type of processor and the on board graphics didnt work. Luckily my old graphics card was still good so i used it until i could afford the monster card i just bought, a GeForce GTX 780. Got the card, powered down the pc and seated the new one and guess what? It would not out put a video signal at all. I even tried every pci-e slot on the board. I made sure it was powered up, heck it even lit up and the fan was turning. So i took it out and put my old graphics card back in and now IT wont even work! What did I doo wrong? When i turn it on now i cant even see the bios loading.....please help

 

[volkgren]

We need more info about all of your specs including power supply and the old GPU.

 

[phoneman483]

New Amd Ryzen 5 processor and New EVGA 600B 600 w Power Supply

 

[phoneman483]

Like I said It was all working fine with the older graphics card, I just couldn't play any of the newer games.....

 

[phoneman483]

Now even the older graphics card wont work in the new build, but will if i plug it into an ancient Dell desktop I have

 

[phoneman483]

Main thing I'm wondering is if it is a possibility I damaged my MB trying to get that huge card slotted, and would I be wise to go ahead and buy a new mobo