Hello all,
I've been given for graphic card Nvidia GTX 760 OC 2GB DDR5 by Zotac and I'm trying to start it on my PC since few weeks. The result is the same every time - monitor says "no signal". I did so many tests excluded all other PC components. Let me describe the problem in details. The initial PC configuration is:
Intel core i5-2400 / Gigabyte Z68XP-UD4 / DDR3: HyperX 1866Mhz 4GB / PSU: Zalman 460W
At the beginning I would say about the procedure.
Every time I connect both PCIE plug to GTX card. Zalman has both PCIe plugs from one wire, other PSUs I used, have one PCIE plug so I use special wire: 2xMolex -> 1xPCIE. I always plug video cable to card socket(I have no VGA/DVI/DP socket on mainboard). The BIOS has been updated to latest F6, and last time to UEFI U1L. The battery was off many times, therefore default settings are still in use. The mainboard has 4 diagnostic leds, which lights when PC starts, and then, after few seconds, they go off all at the same time.
Now lets say about test I made to check the condition of the GTX graphic card:
I connect LCD monitor via VGA cable with DVI->VGA adapter - no signal
Used 2 DVI cables to other 2 monitors - no signal
Put the GTX card to second slot PCIe x4 - no signal
Install the card to other PC with 1156 mainboard, core i7 and Chieftec 450W PSU - there is signal, it works!!!
So, the GTX760 card seems to be in good condition. Ok, now take the GTX card back to first PC with Z68XP mainboard for excluding tests:
I replaced PSU with Corsair VX450W and OCZ500SXS2 500W - no signal
I replaced RAM memory with other memtest checked modules: Patriot 1066Mhz 2GB and Kingston 1333MHz 4GB - no signal
Finally I replaced GTX with GF 8600 GTS and GF 8600GT to initial PC config as I described few row below - there is signal in both! So, the PCIe slots seems to be OK and in general, there should be no problem with all other components... but PSUs - because both older graphic card 8600GT and 8600GTS didn't used all the power available.
Next test is check PSU Corsair 450W with secondary PC(1156 socket i7) equipped with GTX 760 card - of course, there is signal!
My result is all the PC components looks like OK. Lucky me? Not at all, still donno what is wrong with this graphic bastard from Zotac.
Today I went totally other way. On the 8600GT card I started the Windows (8.1, 64bit) and configured vnc server. Then I prepared the network enviroment and invited PC with my base notebook there. Then I installed GTX card, start PC and used the notebook to estabilished vnc connection with the PC. What I saw is Windows desktop normally working. I opened device manager/graphic cards and there was onboard intel graphic card only. So, it looks like GTX is totally not seen by the system/mainboard. I scanned for new devices - no result. Used AIDA64 software to show PC configuration - showed all devices but GTX card. Knowing nothing sensible to do next, I run UEFI bios and disabled onboard graphics, set priority to PCIe graphic card and start the VNC connection again. This time there was very low desktop resolution (640x480) and no any video cards in device manager.
My conclusion is there is some compatibility issue between mainboard and graphic card or maybe there are some option to adjust I don't know about? Is it possible to change some settings in GTX card on other PC to improve compatibility with some mainboards? Or maybe any firmware replace? Or the same to UEFI bios?
Sorry for so long description, but the story is long too.
I would appreciate very much if someone here could read it all and maybe know how to solve the problem.
Thanks, Jack
I've been given for graphic card Nvidia GTX 760 OC 2GB DDR5 by Zotac and I'm trying to start it on my PC since few weeks. The result is the same every time - monitor says "no signal". I did so many tests excluded all other PC components. Let me describe the problem in details. The initial PC configuration is:
Intel core i5-2400 / Gigabyte Z68XP-UD4 / DDR3: HyperX 1866Mhz 4GB / PSU: Zalman 460W
At the beginning I would say about the procedure.
Every time I connect both PCIE plug to GTX card. Zalman has both PCIe plugs from one wire, other PSUs I used, have one PCIE plug so I use special wire: 2xMolex -> 1xPCIE. I always plug video cable to card socket(I have no VGA/DVI/DP socket on mainboard). The BIOS has been updated to latest F6, and last time to UEFI U1L. The battery was off many times, therefore default settings are still in use. The mainboard has 4 diagnostic leds, which lights when PC starts, and then, after few seconds, they go off all at the same time.
Now lets say about test I made to check the condition of the GTX graphic card:
I connect LCD monitor via VGA cable with DVI->VGA adapter - no signal
Used 2 DVI cables to other 2 monitors - no signal
Put the GTX card to second slot PCIe x4 - no signal
Install the card to other PC with 1156 mainboard, core i7 and Chieftec 450W PSU - there is signal, it works!!!
So, the GTX760 card seems to be in good condition. Ok, now take the GTX card back to first PC with Z68XP mainboard for excluding tests:
I replaced PSU with Corsair VX450W and OCZ500SXS2 500W - no signal
I replaced RAM memory with other memtest checked modules: Patriot 1066Mhz 2GB and Kingston 1333MHz 4GB - no signal
Finally I replaced GTX with GF 8600 GTS and GF 8600GT to initial PC config as I described few row below - there is signal in both! So, the PCIe slots seems to be OK and in general, there should be no problem with all other components... but PSUs - because both older graphic card 8600GT and 8600GTS didn't used all the power available.
Next test is check PSU Corsair 450W with secondary PC(1156 socket i7) equipped with GTX 760 card - of course, there is signal!
My result is all the PC components looks like OK. Lucky me? Not at all, still donno what is wrong with this graphic bastard from Zotac.

Today I went totally other way. On the 8600GT card I started the Windows (8.1, 64bit) and configured vnc server. Then I prepared the network enviroment and invited PC with my base notebook there. Then I installed GTX card, start PC and used the notebook to estabilished vnc connection with the PC. What I saw is Windows desktop normally working. I opened device manager/graphic cards and there was onboard intel graphic card only. So, it looks like GTX is totally not seen by the system/mainboard. I scanned for new devices - no result. Used AIDA64 software to show PC configuration - showed all devices but GTX card. Knowing nothing sensible to do next, I run UEFI bios and disabled onboard graphics, set priority to PCIe graphic card and start the VNC connection again. This time there was very low desktop resolution (640x480) and no any video cards in device manager.
My conclusion is there is some compatibility issue between mainboard and graphic card or maybe there are some option to adjust I don't know about? Is it possible to change some settings in GTX card on other PC to improve compatibility with some mainboards? Or maybe any firmware replace? Or the same to UEFI bios?
Sorry for so long description, but the story is long too.


Thanks, Jack