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Blacklablelive

Pc will boot with one 1080ti not 2 plz help

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Posted · Original PosterOP

I recently bought a second 1080ti and a new mobo. Asus maximus x formula. Whenever I install the second card. My pc turn on. No display and get a post code 30 or sometime 44. When I uninstall it. It boot fine. Iv tested both cards by them self's. Boot to windows fine. But when I try a run both. I get a computer with no display. Pumps and fans turn on. But stuck with post code 30 and black screen. Iv also tried it on another mobo. Maximus x hero. Same thing.

64 bit

Psu evga 1600

8700k

Asus 1080ti turbo x2

Mobo asus maximus x formula 

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Is the pci slot your connecting it to turned on in the BIOS ?

Do you have enough PCI lanes to handle 2 cards,

Do you have enough wattage from your PSU, are you connecting all required power cables to your cards. Have you plugged in each card signally to verify its not at fault?

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Posted · Original PosterOP

I'm on a asus maximus x formula comeing from a asus maximus x hero. Both have the same problem. One card at a time works. But if both installed I get no display and post code 30. My psu is a evga 1600 supernova. If I place cards in slot 1 x16 and slot 3 x4 it will boot. But no sli or linking cards. But if I do slot 1 and slot 2 x8. Wont boot nor display at all. Even one card alone in slot 2 will not boot. Iv bought the second board yesterday. Asus maximus x formula thinking it was my slot on the 1st board. But now both boards don't work in slot 2 and give code 30

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Posted · Original PosterOP
37 minutes ago, cncr04s said:

Is the pci slot your connecting it to turned on in the BIOS ?

Do you have enough PCI lanes to handle 2 cards,

Do you have enough wattage from your PSU, are you connecting all required power cables to your cards. Have you plugged in each card signally to verify its not at fault?

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