Cant use discreet GPU

Can’t use my gpu for some reason, and when trying to look into the access, it seems that i don’t have access to the pcie.
Running " lspci -k | grep -EA3 ‘VGA|3D|Display’ " gets me a pcilib: Error reading /sys/bus/pci/devices/0000:00:08.3/label: Operation not permitted even after the whole nvidia-inst thingie