Computer won’t boot?

[Setto69]

So I recently got a 5070 ti and my old psu didn’t have a pcie slot for it so I had to buy a new one and which I did and I plugged everything thing in where they should go and it’s not booting. When I tried to the pc on the motherboard lights turned on and my cpu cooler lit up with a red caution sign and I’m kinda at a lost for what went wrong. Ps I’m still fairly new at building pcs.

[Hinjima]

3 minutes ago, Setto69 said:

So I recently got a 5070 ti and my old psu didn’t have a pcie slot for it so I had to buy a new one and which I did and I plugged everything thing in where they should go and it’s not booting. When I tried to the pc on the motherboard lights turned on and my cpu cooler lit up with a red caution sign and I’m kinda at a lost for what went wrong. Ps I’m still fairly new at building pcs.

 

Did you change out all the cables when swapping PSU?

[Setto69]

Yes I did I put in the new cables

[Hinjima]

12 minutes ago, Setto69 said:

Yes I did I put in the new cables

What motherboard is this?

Is the CPU cooler pump connected?

I see on cable top right but that might be an RGB cable?

[Setto69]

It is the ASUS ROG STRIX Z790-H Gaming and yes I connected the two sata cables that it needs with one hanging out and yes that’s the rgb cable.

[Hinjima]

8 minutes ago, Setto69 said:

It is the ASUS ROG STRIX Z790-H Gaming and yes I connected the two sata cables that it needs with one hanging out and yes that’s the rgb cable.

Some computers won't turn on if the CPU_FAN header isn't populated.

That could be the red caution sign on the CPU cooler for example.

[Setto69]

And what would be the cpu_fan header I’m still a little new

[Hinjima]

10 minutes ago, Setto69 said:

And what would be the cpu_fan header I’m still a little new

Thats okay   What AIO do you use?  

Red would be CPU_FAN and Yellow would be AIO_PUMP.

It looks like you did have something in CPU_FAN, double check this please.

[Setto69]

It is the Corsair Icue H150i elite lcd xt and the one In the cpu fan spot is a little wire coming from inside the lcd screen