I'm trying to download a driver for the ATI FirePro V7800 but when I download a driver or something it says my hardware is wrong and when I download something else it doesn't work. Does anyone have a driver or something? It asks me for version 22.8.2
That AMD Pro GPU card is quite old and not supported by AMD driver updates anymore. The last supported driver is from 2017 for Windows 10 or older OSes: https://www.amd.com/en/support/professional-graphics/legacy-products/firepro-v-series/firepro-v7800
Is this where you downloaded your V7800 AMD Driver from?
If you not sure of which GPU you have installed, download and run GPU-Z and that will show the exact GPU card you have installed.
Please post your PC information including Windows version.
I would download the Driver from AMD download site. I don't know how reliable that website is that you linked to.
The link I posted in my last reply is for the Firepro V7800 Pro GPU card.
The FireGL V is a different model with different Drivers.
Otherwise AMD Moderator of Pro GPU card can help you from here on @fsadough but he is going to need more information then what you have posted.