I have 2 Nvidia GeForce GTX 780 on a Gigabyte GA-X79S-UP5-WIFI (rev. 1.0). Both gpus were working fine yesterday I've had them in SLI for quite a while with no issues.
Yesterday I decided to roll back a video driver because the HDR setting was giving me issues in Mass Effect Andromeda since the nvidia driver update. As sugested by some users, I did a "clean install" to effectively roll back the driver. (http://answers.ea.com/t5/Bug-Reports/HDR-doesn-t-work-after-Win-10-creators-update/m-p/6011382#M14360)
Since doing so, one of the GPUs disappeared from the nvidia control panel and the device manager. After some tweaking I managed to find it as "hidden" and, according to the device manager, unplugged. I'll clarify that I hadn't unplugged the GPU at that point, the roll back somehow disconnected it.
Been trying to make it work since yesterday but I've had no success so far, switched the GPUs to see if they had problems, but both seem to work fine individually. I have them connected in the PCIEX16_1, and PCIEX16_2 slots. Flashed the BIOS, reinstalled the drivers several times, uninstalled everything and installed from scratch but that didn't work either.
My OS is windows 8.1, I also have 64 gb of ram (for some reason the mother board only detects 55, according to what I saw in the BIOS, two sockets detect 4 gb instead of 8).
Summarizing:
Driver roll back "disconnected" one GPU and I've been unable to re-connect it.
Help me Obi-Wan Kenobi, you're my only hope.
Yesterday I decided to roll back a video driver because the HDR setting was giving me issues in Mass Effect Andromeda since the nvidia driver update. As sugested by some users, I did a "clean install" to effectively roll back the driver. (http://answers.ea.com/t5/Bug-Reports/HDR-doesn-t-work-after-Win-10-creators-update/m-p/6011382#M14360)
Since doing so, one of the GPUs disappeared from the nvidia control panel and the device manager. After some tweaking I managed to find it as "hidden" and, according to the device manager, unplugged. I'll clarify that I hadn't unplugged the GPU at that point, the roll back somehow disconnected it.
Been trying to make it work since yesterday but I've had no success so far, switched the GPUs to see if they had problems, but both seem to work fine individually. I have them connected in the PCIEX16_1, and PCIEX16_2 slots. Flashed the BIOS, reinstalled the drivers several times, uninstalled everything and installed from scratch but that didn't work either.
My OS is windows 8.1, I also have 64 gb of ram (for some reason the mother board only detects 55, according to what I saw in the BIOS, two sockets detect 4 gb instead of 8).
Summarizing:
Driver roll back "disconnected" one GPU and I've been unable to re-connect it.
Help me Obi-Wan Kenobi, you're my only hope.
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