[Error passing through video card NVIDIA K620]

search for "nvidia vm passthrough" until you come across instructions on modifying the nvidia VBios for your card.

There is a header which must be removed from the vbios file(using a hex editor)

 

I do believe SpaceInvader has more than one video on YouTube demonstrating the procedure.

I have the same gpu and this step was necessary

[GUIDE *****Custom VM icons automatically downloaded and installed to unraid]

used these to make my custom banner 

[GUIDE *****Custom VM icons automatically downloaded and installed to unraid]

and my favorite kodi icon

[GUIDE *****Custom VM icons automatically downloaded and installed to unraid]

 one last Bliss OS logo

[GUIDE *****Custom VM icons automatically downloaded and installed to unraid]

transparent background generic android logo

[GUIDE *****Custom VM icons automatically downloaded and installed to unraid]

and another

[GUIDE *****Custom VM icons automatically downloaded and installed to unraid]

 another GZL icon

[GUIDE *****Custom VM icons automatically downloaded and installed to unraid]

a little KDE Neon love

[GUIDE *****Custom VM icons automatically downloaded and installed to unraid]

 I am on the board of directors for Bliss OS which is an Android based operating system developed for x86 hardware.  Cheap plug here :-) but this is the icon i use for my test VM

[GUIDE *****Custom VM icons automatically downloaded and installed to unraid]

good quality Linux Mint 

[GUIDE *****Custom VM icons automatically downloaded and installed to unraid]

My Windows 10 icon

[GUIDE *****Custom VM icons automatically downloaded and installed to unraid]

 GroundZeroLinux is an Arch based distro designed by Android developers, for developers