This covers obtaining the ISO, connecting to Wi-Fi, partitioning, formatting, mounting, installing, setting up encryption and installing GRUB, in one article. Also includes some tips, like quickly mounting from install medium. Maybe this helps someone.
You might install an older kernel version from
/var/cache/pacman/pkgand then regenerate the initramfs. If not using NVIDIA, it’s very easy to have multiple kernels installed (e. g. linux, linux-lts) to have another option if one kernel causes trouble.I’d generally recommend having the lts or mainline kernel additionally if you use custom kernels, like zen or self compiled