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Topic: Help with : SAPPHIRE 100352-4L Radeon HD 7950 (Read 457 times)

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Hello:  I need some advice please.  

My card has stopped working.  It is a:

SAPPHIRE 100352-4L Radeon HD 7950 3GB GDDR5 PCI-Express Video Card with Boost
http://www.newegg.com/Product/Product.aspx?Item=N82E16814202030


I bought it June 2013.  I have 3 other cards, exact same model.  

The fan is spinning and I do not see any burn marks on the board or card.  I was using a powered 16X to 16X Powered Riser Cable.  I tried swapping out the cable with a 1X to 16X with no luck.  The card is powering up, but windows does not recognize it.  The other 3 are working fine.  I have a Tripplite Surge protector on the rig.  Not sure if its the card, motherboard or something else.  

No overclocking.  I took it easy on these guys.

Any suggestions?

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My system:
Asus F1A75V/EVO w/4GB DDR3 1600MHz Memory
http://www.asus.com/Motherboards/F1A75V_EVO/

4 SAPPHIRE 100352-4L Radeon HD 7950 3GB GDDR5 PCI-Express Video Card with Boost
http://www.newegg.com/Product/Product.aspx?Item=N82E16814202030

Rosewill LIGHTNING-1300 1300W Continuous @ 50°C, Intel Haswell Ready, 80 PLUS GOLD, ATX12V v2.31 & EPS12V v2.92
http://www.newegg.com/Product/Product.aspx?Item=N82E16817182063

Windows 7
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