One Graphics card works, two do not

[mRoy62]

With one EVGA GeForce GTX 460 graphics card plugged in everything works.
When I plug in a second card and turn on the system never even gets to a bios screen.

Please can someone explain what the normal process is for adding a second card. I will not be using SLI.

 

[fuzzynuts11]

Why are you adding 2 GPUs if you're not going to run SLI? Also, it sounds like your PSU is too weak.

 

[thespieler]

Duel monitors? yeah sounds like your powersupply is chugging.

 

[xtreme5]

Why are you adding 2 GPUs if you're not going to run SLI? Also, it sounds like your PSU is too weak.

huh! how did you guess that the psu is weaker may be it's a high wattage and a quality brand.

 

[duxducis]

As i remember it based on your motherboard if they share the x16 lanes the other slot only was meant to add SLI card so when you plug both without bridge nothing happen. you need motherboard with 2 dedicated PCIe lanes designed to take 2 cards separately (need to read manual)
I had same story where i try adding Nvidia card to ATI card to set up Physics and could not boot, that was on my wife's PC, but it worked on my. So im interested to hear reasons for this as well.

do you know make/model of your Motherboard?

 

[mRoy62]

Yeah, I should have specified the PSU and the reason for 2 card. I forgot that most people here are generally games focused.

PSU: 760W
2 cards for 4 monitors

Brand new system that I am building and microcenter told me this card should be more than man enough.

 

[de5_Roy]

With one EVGA GeForce GTX 460 graphics card plugged in everything works.
When I plug in a second card and turn on the system never even gets to a bios screen.

Please can someone explain what the normal process is for adding a second card. I will not be using SLI.

what are your full specs?
did you connect all the pcie power connectors? iirc each gtx 460 needs 2 pcie power connectors. and sli needs sli bridge.

 

[mRoy62]

MSI MB
Intel i7 2600K
16GB
SSD: 128 GB
HDD: 2TB
2 x GTX 460

 

[xtreme5]

that's are amazing stuff!

 

[mRoy62]

that's are amazing stuff!

Yeah, close to $2K. Now if only I can get it working

 

[Sunius]

Yeah, close to $2K. Now if only I can get it working

He was sarcastic. You never told us exact model of your motherboard, nor exact model of your PSU, it could be anything atm.

 

[xtreme5]

hmm, now what is your serious problem?

 

[mRoy62]

Best answer selected by mRoy62.