rob martin :
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ust upgraded my graphics card to the ZOTAC 2GB edition of the GT 640. The requirements say that it requires a minimum 350W PSU with 20A on the 12V rail. I have a 400W PSU with 2 12V rails of 8A and 14A. I took the card to a friend who has a similar computer to mine, he had no problems using it. I put it in mine, and it won't display anything unless it is in the windows 8 environment. So no POST. I am thinking that maybe the problem is the cable I am using with my monitor, it is a dual link DVI cable. The 640 has to dvi connections on it, one of them has a slash with for pin holes around it and the other has just the slash. I am told one is regular DVI and the other is called dual link DVI. I am thinking if I get a VGA cable, and use the included DVI adapter, along with the existing DVI cable I have, it will work. I am 99.99999999999999999999999999% sure it isn't a problem with the PSU. The onboard video is disabled.
Any ideas? I had to do a factory reset today, and I had to go back to my old GPU while doing it. if it is any help, the monitor is a Benq NVidia 3D vision ready monitor. (It is the T version, not the TX version), the cable works perfectly fine with the old GPU, but it doesn't have two DVI connectors on it.
Any help is appreciated.
Thank you
ust upgraded my graphics card to the ZOTAC 2GB edition of the GT 640. The requirements say that it requires a minimum 350W PSU with 20A on the 12V rail. I have a 400W PSU with 2 12V rails of 8A and 14A. I took the card to a friend who has a similar computer to mine, he had no problems using it. I put it in mine, and it won't display anything unless it is in the windows 8 environment. So no POST. I am thinking that maybe the problem is the cable I am using with my monitor, it is a dual link DVI cable. The 640 has to dvi connections on it, one of them has a slash with for pin holes around it and the other has just the slash. I am told one is regular DVI and the other is called dual link DVI. I am thinking if I get a VGA cable, and use the included DVI adapter, along with the existing DVI cable I have, it will work. I am 99.99999999999999999999999999% sure it isn't a problem with the PSU. The onboard video is disabled.
Any ideas? I had to do a factory reset today, and I had to go back to my old GPU while doing it. if it is any help, the monitor is a Benq NVidia 3D vision ready monitor. (It is the T version, not the TX version), the cable works perfectly fine with the old GPU, but it doesn't have two DVI connectors on it.
Any help is appreciated.
Thank you
OK, I just ran across the fix for this while doing research on something else. I am assuming you have a UEFI Mobo, with Secureboot. If I am right, try this out. It should work:
http://nvidia.custhelp.com/app/answers/detail/a_id/3156/~/when-installing-an-after-market-graphics-card-into-a-certified-windows-8-pc
Good day to you!