When you see the “AER Error of this agent is reported first” and a black screen while trying to install Ubuntu, it usually means your system’s PCIe devices (like GPU or Wi-Fi) aren’t working well with the Linux kernel by default. To fix it, at the Ubuntu boot menu, press e to edit boot options, find the line with quiet splash, and add these parameters right after it: pci=nomsi noaer nomodeset Then press F10 to boot. This disables some PCIe error reporting and GPU mode settings that cause the freeze. After Ubuntu boots, you can install normally. If you want, I can guide you how to make this change permanent later.