Yeah, you've gotta tell us what you're working with. If it's a GeForce, I'm out of ideas. Try and find some resources from other people who've gotten it working, but AFAIK it's a really hard nut to crack, that's why I bought a Quadro.
Did you see this post? Might be helpful - if you saw/tried it already, I apologize. Looks like there's hope for geforce people after all, though.@AveryFreeman I did hypervisor.cpuid.v0=false before even installing the GPU in the VM. I Started the System with it, and shut it down right after it. After that I installed the PCI Device and added pciPassthru.use64bitMMIO = "TRUE", pciPassthru1.msiEnabled = "FALSE" and pciPassthru0.msiEnabled = "FALSE"
Then I started the VM again and Installed the Device Drivers. If I Keep the SVGA then I will only get Bluescreens at the windows Start. I deinstalled the Nvidia Drivers now, reinstalled them, then they work for this short period (No code 43) but after one reboot Code 43 appears again.
I even tried the ACS Check , but that also didn't help. I am on the Newest Windows Version.