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GTX 980Ti will not POST

post #1 of 6
Thread Starter 
I've been stumped by this new GTX 980Ti(EVGA Classified requires two 8-pin PCIE connectors) I just bough., Any thoughts or ideas here will really be appreciated.

Currently running an i7 920 with an Asus P6T mobo with 3x4 GB sticks of ram. Power supply is a Seasonic SS-760XP2. 760W andmy current working GPU is a GTX 680 (requires two 6 pin PCIE connectors.)

I have not been able to get this thing to POST in this rig yet. Well not fully. I hooked up a speaker to it and it gives the normal POST beep, but no video is displayed and after a short time a short beep comes up, and if left on long enough it will keep repeating. The first thing I tried was swapping out PSUs with an older 850W I have but that was a no go as well. Same exact problem with POST beep, no video at all followed by the short beep. I tried looking up this pattern but I could not find anything online with a normal/long beep followed after some time with a short one.

I then tried putting the GTX 680 back in and it POST'd and booted just fine, on both power supplies. Swapped the GTX 980 Ti in and no go. I tried swapping PCIE slots, none of them worked and all gave me back the same problem.

I do have an older ASUS P5E motherboard with a Q6600 and I was surprised to see that the GTX 980Ti POST'd in that board just fine, as did the GTX 680 and an AMD HD 4830.

I have tried stripping down the P6T board down to 1 stick of ram, a keyboard and the GTX 980Ti and even that did not make it past POST.

There are no overclocks on this system, and I have reset the bios settings to defaults using the GTX 680. On an interesting note about the bios, sometimes it would need to be reset after having the GTX 980 in.

I'm at a loss at what I could try or do, the GPU itself is fine as it works in the older board. I just do not see why it would not POST at all in the P6T.

Is there something I am missing or anything else I could try to get this to work? Any help is appreciated, thanks.


Update: Tried using no GPU at all to see what the POST code would be, and it is the standard no video code and not the same one that I am getting with the GTX 980Ti

Update #2: attached screenshots of the GTx 980ti GPUZ running on the older system, I didn't notice anything out of the ordinary but it might help
980ti-p5e.png 146k .png file 980ti-p5e2.png 112k .png file
Edited by Regent - 2/9/16 at 12:04pm
pc
(7 items)
 
  
CPUMotherboardGraphicsRAM
intel core i7 920 Asus P6T EVGA GTX 680 Corsair RAM 
Hard DriveOSPower
Samsung 850 Pro Windows 10 Seasonic SS-760XP2 760W 
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pc
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post #2 of 6
Thread Starter 
Looking more into this, I believe the card is simply not compatible with an ASUS P6T. After talking to EVGA support it was mentioned that the Low Memory Gap setting must not be correct on the P6T and unfortunately even with the latest BIOS it is not configurable. It doesn't seem to be any way around it at this point.
pc
(7 items)
 
  
CPUMotherboardGraphicsRAM
intel core i7 920 Asus P6T EVGA GTX 680 Corsair RAM 
Hard DriveOSPower
Samsung 850 Pro Windows 10 Seasonic SS-760XP2 760W 
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pc
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CPUMotherboardGraphicsRAM
intel core i7 920 Asus P6T EVGA GTX 680 Corsair RAM 
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Samsung 850 Pro Windows 10 Seasonic SS-760XP2 760W 
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post #3 of 6
I replaced a 680SLI with a 980Ti, I had to update my bios to get the rig to post. This was on a MSI mobo (Z77A-GD65). I was surprised, doesn't seem like there should be that much difference, but it did the trick. So your mobo not liking the 980Ti might be correct.
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CPUMotherboardGraphicsGraphics
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RAMHard DriveHard DriveOptical Drive
G.Skill F4-3000C15Q-32GRK Samsung SM951 M.2 Samsung 850 Pro 512GB Pioneer BDR-2209 
CoolingOSMonitorKeyboard
EKWB Blocks, Fans, and Pumps, HW Labs Black Ice... Windows 10 Pro Retail BenQ BL3201PH Max Keyboard Nighthawk X8 
PowerMouse
EVGA 220-P2-1200-X1 Roccat Kone Pure Optical 
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I7-7700K De-lidded @ 5GHz Asus Strix Z270i Nvidia Titan Xp G. Skill F4-3600C15D-16GTZ 
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post #4 of 6
Thread Starter 
I looked and my board already has the latest released version. I wish there was some way to see what that setting is currently set to by default. Trying to get ahold of ASUS to see if they have any workarounds, not having much luck though. This is not a very obvious or common incompatibility, I'm having a hard time finding information about it.
pc
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intel core i7 920 Asus P6T EVGA GTX 680 Corsair RAM 
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pc
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post #5 of 6
Wish I knew more about it. You might make a post in the Intel Mobo forum and see if anybody there can tell you what's up.
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CPUMotherboardGraphicsGraphics
I7-5960X Asus Rampage V Extreme 1502 EVGA Titan X EVGA Titan X 
RAMHard DriveHard DriveOptical Drive
G.Skill F4-3000C15Q-32GRK Samsung SM951 M.2 Samsung 850 Pro 512GB Pioneer BDR-2209 
CoolingOSMonitorKeyboard
EKWB Blocks, Fans, and Pumps, HW Labs Black Ice... Windows 10 Pro Retail BenQ BL3201PH Max Keyboard Nighthawk X8 
PowerMouse
EVGA 220-P2-1200-X1 Roccat Kone Pure Optical 
CPUMotherboardGraphicsRAM
I7-7700K De-lidded @ 5GHz Asus Strix Z270i Nvidia Titan Xp G. Skill F4-3600C15D-16GTZ 
Hard DriveCoolingOSPower
2X Samsung 960 Pro 512GB M.2 EK Supremacy EVO CPU. Titan Xp Full Cover w/Ba... Windows 10 Pro 64 Bit SeaSonic X750 
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Fractal Nano S 
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Death Bomb
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CPUMotherboardGraphicsGraphics
I7-5960X Asus Rampage V Extreme 1502 EVGA Titan X EVGA Titan X 
RAMHard DriveHard DriveOptical Drive
G.Skill F4-3000C15Q-32GRK Samsung SM951 M.2 Samsung 850 Pro 512GB Pioneer BDR-2209 
CoolingOSMonitorKeyboard
EKWB Blocks, Fans, and Pumps, HW Labs Black Ice... Windows 10 Pro Retail BenQ BL3201PH Max Keyboard Nighthawk X8 
PowerMouse
EVGA 220-P2-1200-X1 Roccat Kone Pure Optical 
CPUMotherboardGraphicsRAM
I7-7700K De-lidded @ 5GHz Asus Strix Z270i Nvidia Titan Xp G. Skill F4-3600C15D-16GTZ 
Hard DriveCoolingOSPower
2X Samsung 960 Pro 512GB M.2 EK Supremacy EVO CPU. Titan Xp Full Cover w/Ba... Windows 10 Pro 64 Bit SeaSonic X750 
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post #6 of 6
Try looking here to see if anyone has modded the BIOS for this.
https://www.bios-mods.com/forum/
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My System
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Hard DriveOptical DriveCoolingOS
OS SSD 840 Pro 256GB / FSX SSD 840 Pro 256GB LG DVD Thermalright SB-E x2 Win7 Ult 64b 
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