My OpenCL is a higher version then i need

my Version right now is from Ividia 7.8, when i try to use hashcat it says i need the version 7.7

My problem now is I dont know how to fix this, i have Ividia but how i download the older version
Your CUDA version doesn't match to your driver version.
Read more about compatibility in Table 3. CUDA Application Compatibility Support Matrix
and install matching driver.

How you can do this depends on your Linux distribution, e.g. on Arch Linux to update both (CUDA and NIVIDiA driver) to latest version:
$ sudo pacman -Syu