GPU isn't posting

Lexile

Prominent
Apr 16, 2017
3
0
510
Hey, i recently bought a new computer (i7-7700k, msi z270 sli plus, 8gb ddr4 Vengeance). The build isn't finished yet and my cpu doesn't have a very good cooler so i can't even play league of legends or any other easy to run game like that. I have an old 9500gt in my other computer and decided to stick that in and use that for gaming because it surely will run league for now. when i did that my computer powered on and all the LEDs turned on, all the fans were spinning but i didn't get a POST (HDMI was plugged into my GPU). I tried plugging the HDMI back to the integrated gpu and that wouldn't post either until i took the gpu out. I tried to download drivers from nvidia for that particular card but it didn't work. I received an error saying that the gpu wasn't detected so now i'm stuck because i can't get the card to sit in the PCI-E slot and boot from my integrated gpu and i also can't boot from the GPU itself. What should i do now ?
 

Lexile

Prominent
Apr 16, 2017
3
0
510
Yes, but when I install the graphics card into the pci-e it doesn't post through the motherboard or the gpu but it still boots up okay as none of the LEDs which signalise a problem light up