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Issues with MSI Twin Frozr 7950 and Koolance 7970 Block

post #1 of 25
Thread Starter 
As the title states for some reason, when I swap the stock cooler with the block the card will not fire up. However with the stock cooler itself it works perfectly. I have absolutely no idea why, Google searches come up empty, and a couple of friends I've asked are just as stumped as I am. All related articles to people having this card and the block have had no issues as far as I can tell. I've tried just about everything and really don't know what else to try. If anyone has any idea as to why, I would love to hear it. Thanks.

Just for reference:
MSI 7950 (I received the 7970 reference)
Koolance Block

I will be checking one thing tomorrow and will update based on findings.
Edited by maeriooo - 3/11/13 at 11:15pm
post #2 of 25
is yours the 8pin+6pin pcie power plug? if not then you do not have a 7950 with a 7970 reference board.

maybe you over tighten the screws? or they are shorting out. use the plastic spacer that came with the screws.
you would probably want to order a cross bracket too. because my 7950 msi needed it, it was not keeping a tight contact with the koolance block.
Edited by aznever - 3/11/13 at 11:19pm
post #3 of 25
Thread Starter 
Yes it's 8+6, plus I wouldn't be able to fit the block to begin with if it wasn't. tongue.gif
post #4 of 25
post #5 of 25
Thread Starter 
I actually have one coming in tomorrow, that was one of the last few things I could think of. Hopefully that is the problem, because beforehand I recall taking off the block the first time I noticed there was no TIM on the block where it should have made contact with the GPU heat spreader. As for the other screws I made sure not to over tighten and I use the plastic washers as well. I will update with whatever happens tomorrow. Maybe I won't need further troubleshooting. biggrin.gif
post #6 of 25
Please do update us. I'm interested in if it works. Also, can you please post some pics? Thanks and good luck!
post #7 of 25
Thread Starter 
Well, I got it to work... but on another computer. I swapped an old 5850 in my current build and it booted perfectly. Re swapped the 7950 in and no luck, however when I placed the 7950 where the 5850 was it booted perfectly as well. Now I am even more stumped than I was starting off. I started to think that maybe it was the PSU but then the 5850 wouldn't start either. Then I thought maybe the PSU cable I was using severed or something, but for the same reasons it doesn't make sense, plus I tried with another cable regardless and that wasn't the problem. I'll post pics soon, I just really want to get this working after so much trouble I have gone through.

I'm thinking it is a grounding issue, but I wouldn't know where to begin.
Edited by maeriooo - 3/12/13 at 5:17pm
post #8 of 25
Quote:
Originally Posted by maeriooo View Post

Well, I got it to work... but on another computer. I swapped an old 5850 in my current build and it booted perfectly. Re swapped the 7950 in and no luck, however when I placed the 7950 where the 5850 was it booted perfectly as well. Now I am even more stumped than I was starting off. I started to think that maybe it was the PSU but then the 5850 wouldn't start either. Then I thought maybe the PSU cable I was using severed or something, but for the same reasons it doesn't make sense, plus I tried with another cable regardless and that wasn't the problem. I'll post pics soon, I just really want to get this working after so much trouble I have gone through.

I'm thinking it is a grounding issue, but I wouldn't know where to begin.

What psu are you using?

Are you using a molex to 6 or 8 pin?
Edited by nova4005 - 3/12/13 at 5:30pm
Main Rig
(13 items)
 
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(12 items)
 
CPUMotherboardGraphicsGraphics
Intel 3770K MSI Z77 MPower MSI R7970 Lightning MSI R7950 Twin Frozr 
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G. Skill Trident seagate Baracuda Custom Liquid windows 7 64bit 
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Xeon E5-26XX V2 2.3-2.7Ghz 10core/20 thread Xeon E5-26XX V2 2.3-2.7Ghz 10core/20 thread SuperMicro x9DAi EVGA GTX 580 
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G.SKILL Ripjaws X Series 8GB (4 x 2GB) 240-Pin ... G.SKILL Ripjaws X Series 8GB (4 x 2GB) 240-Pin ... Patriot 16gb Flash drive Hyper 212+ evo 
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Hyper 212+ evo Ubuntu 12.04 OCZ Z series 1000w gold Fractal design define xl 
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Main Rig
(13 items)
 
BOINC
(15 items)
 
E5-26XX V2 2P
(12 items)
 
CPUMotherboardGraphicsGraphics
Intel 3770K MSI Z77 MPower MSI R7970 Lightning MSI R7950 Twin Frozr 
RAMHard DriveCoolingOS
G. Skill Trident seagate Baracuda Custom Liquid windows 7 64bit 
MonitorKeyboardPowerCase
ASUS VE248 Microsoft Wireless Corsair HX1000 Cosmos S 
Mouse
Microsoft Wireless 
CPUMotherboardGraphicsGraphics
Q9550 2.83Ghz @ 4.0Ghz 1.328v Gigabyte EP45T-DS3R Ati Radeon hd 6970 Sapphire HD 7970 
RAMHard DriveOptical DriveCooling
Corsair XMS3 seagate Baracuda LG Blu-Ray RW rosewill air cooler 
OSMonitorKeyboardPower
Windows Pro 64-Bit none Micosoft Wireless OCZ 1000w 
CaseMouse
Antec 900 Microsoft Wireless 
CPUCPUMotherboardGraphics
Xeon E5-26XX V2 2.3-2.7Ghz 10core/20 thread Xeon E5-26XX V2 2.3-2.7Ghz 10core/20 thread SuperMicro x9DAi EVGA GTX 580 
RAMRAMHard DriveCooling
G.SKILL Ripjaws X Series 8GB (4 x 2GB) 240-Pin ... G.SKILL Ripjaws X Series 8GB (4 x 2GB) 240-Pin ... Patriot 16gb Flash drive Hyper 212+ evo 
CoolingOSPowerCase
Hyper 212+ evo Ubuntu 12.04 OCZ Z series 1000w gold Fractal design define xl 
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post #9 of 25
Thread Starter 
A Corsair AX750, no just 8+8 PCI-E cable.
Edited by maeriooo - 3/12/13 at 5:36pm
post #10 of 25
No pics? I would like to see the TFIII with an aftermarket cooler on it if you get the chance. Please & thank you. Sadly I don't know anything about this stuff so I can't help.
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