Please also try installing some older kernel versions from here:
https://kernel.ubuntu.com/~kernel-ppa/mainline/?C=N;O=D
then reboot and as soon as the purple screen appears tap Escape. Then navigate through the menus and choose an older kernel version to boot.
Please also try installing some older kernel versions from here:
https:/ /kernel. ubuntu. com/~kernel- ppa/mainline/ ?C=N;O= D
then reboot and as soon as the purple screen appears tap Escape. Then navigate through the menus and choose an older kernel version to boot.