If there's an installer bug, probably not much you can do at the current moment, but the advice is for anyone trying to get any install working in general:

It would be good to have basic information about your system like model of graphics card, CPU, amount of RAM and motherboard. How long have you had the PC with it working?

Software things to check:

• what do dmesg and /var/log say? (ETA: at the part you are at in the distro idk if you can access the graphical terminal, the virtual tty. You can try the debug mode root shell if they have that with the live disk) Anything that stands out as major error categories?
• How did you set up the USB drive? Dd? Ventoy? Rufus? I've helped someone install Ubuntu 22.04 recently, for some reason they had a lot of trouble getting it with multiple USBs but this old USB I had worked perfectly first try.

Hardware things to troubleshoot:

• (For new builds) did you plug in the correct PSU cables, all the VGA/PCIe 6+2 pins for graphics and 8pin CPUs? If you don't have all of them in you may run into more instability.
• Does htop or system monitor or BIOS show all of the RAM installed? If some are missing you may need to clean and reseat it, or replace it if deemed defective.
• NVMe or SATA III disk? Are both cables plugged in properly for SATA?
• Activate the smoke bomb somewhere well-ventilated (by that I mean dust out your PC)

Those types of things would be a good starting point.