I’m trying to install parrot on my laptop, installation always goes well, but upon booting, it boots to bios not showing any bootable devices and on rare occasion grub rescue boots
Try selecting guided partition during partition selection and also dont let the pc screen to turn off, that skips some files leaving the installation broken
can you post the screenshots/images while you try to boot and also the bios setting.
Also try selecting boot device manually when powering on your pc (usually f9 key is used to select boot device)