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Please help, desperate here :(

post #1 of 43
Thread Starter 
Hey guys, I just got two Zotac 660 ti's AMP edition. Both work fine and are stable when tested individually. BUT windows won't boot with both of them powered and plugged in. although it does boot when I put one 660 ti and a GTS 250 in the other slot O__o. My motherboard is a Gigabyte Z68X-UD3H-B3 rev. 1.3. My PSU is also not an issue since me and my friends once used it for GTX 460 SLI

EDIT: GTX 660 TI + GTS 250 ALSO WON'T BOOT. PREVIOUS ATTEMPT WAS SUCCESSFUL BECAUSE GTS 250 WASN'T SEATED PROPERLY.

Btw, i've tested both slots with both gfx cards, all succesful boots and gaming sessions
Edited by kakik09 - 4/4/13 at 7:07am
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post #2 of 43
Try getting rid of the drivers for every other graphics card, but not the ones for the 660's
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post #3 of 43
I'm just trying to help so please bear in mind that , the 660 ti does use more power draw I've calculated it, it is not significant, or all that much. What PSU and specs are your PC. This will help us figure it out better. I know this also might be a stupid question, but do you have the bridge on all the way, and do you have the monitor plugged into the right port, it might be different with your new cards for some reason, you might have to plug it into the first card. Also did you do a full uninstall of all drivers before you swapped out cards. Windows might be trying to read the old cards from boot. Could you also look and see in your bios if pcie is selected as primary source.
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post #4 of 43
Thread Starter 
Quote:
Originally Posted by Jedson3614 View Post

I'm just trying to help so please bear in mind that , the 660 ti does use more power draw I've calculated it, it is not significant, or all that much. What PSU and specs are your PC. This will help us figure it out better. I know this also might be a stupid question, but do you have the bridge on all the way, and do you have the monitor plugged into the right port, it might be different with your new cards for some reason, you might have to plug it into the first card. Also did you do a full uninstall of all drivers before you swapped out cards. Windows might be trying to read the old cards from boot. Could you also look and see in your bios if pcie is selected as primary source.
Oh, my specs are:
core i7 2600k (i haven't oc'ed just in case)
8gb G.Skill Sniper
Antec true power new 750w
wd caviar green 1tb (i bought them along with the 660 ti's)
hyper 212 evo

I have my OS installed on a Samsung HDD which i'm using to type on now (booted my pc with one 660 ti and one GTS 250)
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post #5 of 43
I'm going to look into this for you, but that PSU should be more than enough to handle those cards.
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post #6 of 43
Thread Starter 
Thanks guys! I really hope there is a fix frown.gif
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post #7 of 43
Thread Starter 
Oh yeah btw, it doesn't just shut down when both 660tis are in, it boot loops up to the part before the windows logo shows up
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post #8 of 43
Sounds to me like a power draw issue, personaly thinking a 750w psu would be cutting it close to power all that.
post #9 of 43
Thread Starter 
Heh, funny story guys. and by funny i mean absolutely ANNOYING. I just interchanged the PCIe cables with two 6+2 pins on one card and two 6 pins on another. I was shocked to see it boot =___= but now I dunno how to enable SLI in windows

EDIT: Nvm, 2nd card wasn't seated properly so it booted.
PROBLEM PERSISTS! frown.gif
Edited by kakik09 - 4/4/13 at 6:52am
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RAMHard DriveHard DriveHard Drive
G. Skill Sniper 8gb  Plextor M2S 128gb Samsung 7200rpm 320gb Western Digital 1Tb Caviar Green 
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Cooler Master Hyper 212 EVO Windows 8.1 Pro x64 BenQ GW2250 Razer Blackwidow Tournament 2014 Edition 
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G. Skill Sniper 8gb  Plextor M2S 128gb Samsung 7200rpm 320gb Western Digital 1Tb Caviar Green 
CoolingOSMonitorKeyboard
Cooler Master Hyper 212 EVO Windows 8.1 Pro x64 BenQ GW2250 Razer Blackwidow Tournament 2014 Edition 
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post #10 of 43
Open up the Nvidea control panel and a option should show up there for SLI.

Also it could just be a faulty SLI bridge as it worked after you switched it.
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