Please help! Sli Woes

holymonk · 4 Sep 2012 at 12:53

I just recently got another GFX card (same as below) for SLi.

I have previously used Sli for a short period of time for a pair of GTX460's without much problem.

I have checked each card and they work fine independantly.

When I put in both cards, I encounter the following problems:

1. Only one card shows in device manager.

I did manage to get 2 cards showing in device manager by fresh installing the drivers and I also changed the power supply 6 pins around.

However I get this error message on one of the cards in device manager - Windows has stopped this device because it has reported problems. (Code 43)

I am wondering whether my PSU cant hack it? But I'm a PC noob so its pure speculation.

Any advice would be appreciated.

Rooster212 · 4 Sep 2012 at 13:15

What PSU do you have? And motherboard just to check?

Edit: never mind saw it in your sig...

Rooster212 · 4 Sep 2012 at 13:17

Is it the Hiper 630M that is the psu in your sig?

holymonk · 4 Sep 2012 at 13:24

Yes it is...

After much fiddling around I managed to get both cards showing in device manager and got both cards showing in Nvidia control panel, however when I click enable SLi, the screen goes black, comes back in low resolution and crashes my gfx drivers completely.

I have to reinstall, which I did, and it repeats the same problem.

I will attempt to use an older driver now, I just dont get it..

Bacon? · 4 Sep 2012 at 13:26

I guess its because its a useless PSU. Hiper arent exactly decent.

holymonk · 4 Sep 2012 at 13:27

Bacon? said:
I guess its because its a useless PSU. Hiper arent exactly decent.

So are you attributing sole blame to the PSU, as I will go out and purchase a new one now, but I dont want to if I put a new one in with the same problem, ill cry..

Idleman · 4 Sep 2012 at 13:38

For Sli 560ti, you want at least a decent 650w Psu. I ran mine with a 600w OCZ ModXtream, but it was a bit close so upgraded to a 750w, just to be safe.
You could drop your cpu down to stock and see if that helps.
But it is possible your Psu is at fault.

http://www.extreme.outervision.com/PSUEngine

Bacon? · 4 Sep 2012 at 13:47

Its either the PSU or mobo or drivers.
Have you tried looking for specific SLI drivers?
You need a new PSU regardless of whether its causing the problem.

holymonk · 4 Sep 2012 at 14:52

Ok well I just popped out to a local electronics store and got an XFX 750w Sli ready thing... ill let you know in a mo

holymonk · 4 Sep 2012 at 15:00

Ok, so bought a new psu, installed it, reinstalled graphics, switch to SLi, same issue, nvidia panel crashes, low resolution....

there goes £80 quid.

Bacon? · 4 Sep 2012 at 15:01

Hows "there goes £80"?
Your old PSU was rubbish and would need replacing anyway.

holymonk · 4 Sep 2012 at 15:03

Ok well its not a complete waste but the fact I cant get the fkin thing to work is making me rage.

Bacon? · 4 Sep 2012 at 15:05

Whats your mobo, the worst thing is if it didn't support SLI :rolleyes:

scrlk · 4 Sep 2012 at 15:05

They used to call those Hiper PSUs Hiper Explosive for a good reason.

Re: above post, read his sig.

SLI mobo.

Bacon? · 4 Sep 2012 at 15:06

Just to check you haven't just put the card in and downloaded the drivers right?

You've configured the BIOS correctly and got a working SLI bridge etc...

Idleman · 4 Sep 2012 at 15:09

Bacon? said:
Whats your mobo, the worst thing is if it didn't support SLI

His mobo is sli/xfire compliant.

holymonk · 4 Sep 2012 at 15:12

I have the bridge in place, I did look at the mobo bios and couldnt see anything about enabling SLi in there. I did have a pair of 460's in there many moons ago.

Im pretty sure the cards are correctly in situ as they show in nvidia control panel, until I click 'enable sli mode'.

Bacon? · 4 Sep 2012 at 15:21

Quick question have you updated you BIOS to the latest version. And also have you contacted Nvidia about the problem?

holymonk · 4 Sep 2012 at 15:23

Bacon? said:
Quick question have you updated you BIOS to the latest version. And also have you contacted Nvidia about the problem?

No I haven't - just reinstalled again, going to try an older driver version.

holymonk · 4 Sep 2012 at 15:27

I have googled the issue im having and some people say it appears to be a windows7 problem and reinstalling windows then enabling Sli works...

You think its worth a shot, I know my windows hasnt been formatted for a long time?