GPU stops computer from turning on

[Crazycmg]

Hello, I really need help figuring out this issue with my newly built PC. I bought a 3070 the other day and when it was plugged in it prevented the PC from turning on at all. The fans in the PC would move like a centimeter and then stop (also didn’t light up). I thought it was a faulty card so I went and bought another one. The new 3070 I bought doesn’t work as well. I tried everything i can without looking at bios since I don’t have integrated graphics in my cpu. We plugged a different GPU into the PC and it works fine, just not the 3070. I restarted cmos, restarted bios and updated it with the old card. The parts I have work with the card so it’s also not a compatibility issue. It’s a new PC so I know nothing is wrong with motherboard or PSU. Please offer any suggestions on what it could be. 

[MadAnt250]

17 minutes ago, Crazycmg said:

I have work with the card so it’s also not a compatibility issue.

What parts do you have?

It could be the GPU or the PSU.

[aggfr2]

Pretty sure its drawing too much wattage

from PSU causing it to shut down , what PSU are you using?

Edited February 17, 2021 by aggfr2
Used wrong word

[Crazycmg]

7 minutes ago, MadAnt250 said:

What parts do you have?

It could be the GPU or the PSU.

I have an EVGA 750 BQ power supply

G-Skill 16GB Ripjaws Memory

Asus G-Force RTX 3070 Tuff GPU

Ryzen 5 AMD CPU

ASRock B450M Pro 4 Motherboard 

Seagate 3.5” Internal Drive 

 

[Crazycmg]

2 minutes ago, aggfr2 said:

Pretty sure its drawing too much wattage

from PSU causing it to shut down , what PSU are you using?

EVGA 750 BQ, if that was too much wattage how would I lower it. 
 

[MadAnt250]

Just now, Crazycmg said:

EVGA 750 BQ, if that was too much wattage how would I lower it.

What was the old GPU? A good 750 watt PSU should be ok.

 

[Crazycmg]

1 minute ago, MadAnt250 said:

What was the old GPU? A good 750 watt PSU should be ok.

 

The old GPU I used that worked fine was an asus gtx 1060

[MadAnt250]

3 minutes ago, Crazycmg said:

The old GPU I used that worked fine was an asus gtx 1060

It may or may not matter, but are you using two power cables or one form the PSU?

[Crazycmg]

Just now, MadAnt250 said:

It may or may not matter, but are using two power cables or one form the PSU?

The card requires two 8 pins. Both are coming from the PSU, one cable is says pci that is split as a 6 prong with 2 detached ones for the ground. The other says VGA BQ on it which is a straight up 8 pin. 

[MadAnt250]

8 minutes ago, Crazycmg said:

11 minutes ago, MadAnt250 said:

It may or may not matter, but are using two power cables or one form the PSU?

The card requires two 8 pins. Both are coming from the PSU, one cable is says pci that is split as a 6 prong with 2 detached ones for the ground. The other says VGA BQ on it which is a straight up 8 pin. 

Check cable voltage and connections, if good, you may have to RMA the GPU.

 

Also, if you can, see if the GPU works in another system.