I had stalling at that point on one laptop. Disabling wifi/Bluetooth in bios fixed it. If you need wifi, consider a USB wifi adapter or try installing with latest kernel option
You can figure out if it’s Qubes issue or kernel issue by trying out different live distros. Try Debian 13 live and CachyOS live ISOs. If you have better compatibility with Debian 13 Live compared to CachyOS live ISO it is probably kernel issue (At least I think this way)
It is also generally easier to troubleshoot if you share the exact hardware you are trying this on. This can be dangerous depending on the threat model you have