Machine locks up running 2 pci-e extender cables

[Jepito]

trying to get a new mod running

the machine blue screens or locks up after a few min...

currently running 2 onboard 6950 's

id like to hook up all 4 cards and stagger them  but when i add the pci-e extender cables it crashes ..

i run windows 7 32 bit  gig ram  ect

my mother board is

asus p8p67ws revolution  http://www.newegg.com/Product/Product.aspx?Item=N82E16813131714

gigabyte video card - http://www.newegg.com/Product/Product.aspx?Item=N82E16814125385&Tpk=gigabyte%206950


when i plug up all 4 cards on the board it runs great - but when i add 2 pcie extender cables all goes to hell

any useful  help or info will be rewarded.....

[TeaL]

Are you sure the cables are good?

Try plugging in just one card using each cable to see if one of them (or both) are bad.

[Jepito]

I have 8 cables  and tried different ones .... just wandering if anyone use-n the extender cables are having any problems ... my cables look like this

http://i129.photobucket.com/albums/p216/Jepito/cable.jpg


now matter how or what order i run the cards  .... i get blue screens  


is it a voltage problem i wander .


i see other pictures of this card on extender cables running fine  

i thought i could plug them in and ROLL ...  when i remove the extenders and run them from the board it rocks 
i needed them apart for cooling

[Boozilla]

I have been wrestling with the same issue. I can run the card plugged into the MB socket, put the 16-16 extender inline and the issue comes back.  

not sure what is the reasoning behind the issue but I am currently stuck using 3 1x-16x ribbons and the cards behave properly

I really hope someone can figure this out, having one in the Mb socket is overlapping my 5th port so i have one of this cards sitting on the damn shelf

not a solution but a work around, since having them running they perform wonderfully