How can permission issues on Linux hosts lead to VirtualBox error 0x80004005, and what's the fix?

On Linux hosts, the VirtualBox kernel modules (like `vboxdrv`) require proper permissions and often need to be rebuilt or loaded correctly. If `vboxdrv` isn't running or has incorrect permissions, VirtualBox cannot access host resources necessary to start a VM, resulting in `0x80004005`. To fix this, first ensure your system is updated, then try rebuilding the modules using `sudo /sbin/vboxconfig` (or `sudo rcvboxdrv setup` on some distros) or `sudo modprobe vboxdrv`. Adding your user to the `vboxusers` group (`sudo usermod -a -G vboxusers YOUR_USERNAME`) and restarting the system is also crucial.