After boot, screen freezes: Mint 22.1 Xia on Sager NHx0DB,DE, i7-10870H, NVIDIA GeForce GTX 1650 M

Just received a Sager NHx0DB,DE w/ i7-10870H CPU & NVIDIA GeForce GTX 1650 Mobile GPU. Cinnamon Mint 22.1 Xia was preinstalled by Freegeek.org a no-support community non-profit refurbisher. I installed the latest open source Nvidia video driver and rebooted as it instructed, but now it boots then stops, showing the green LinuxMint logo. How do I reboot back into the original Intel video driver, or into a safe mode. and remove that nVidia driver? Product Specs: Model: NHx0DB,DE OS: Linux Mint 22.1 Xia (Cinnamon) CPU: Intel Core i7-10750H @ 2.6 GHz / 4.4 GHz / 5 GHz Max (6 Cores + HT) RAM: 16 GB DDR4 @ 2933 MHz (16 GB + Empty) - 32 GB Max Storage: 256 GB NVMe (SK hynix BC711 HFM256GD3JX013N) GPU: • Intel UHD Graphics • NVIDIA GeForce GTX 1650 Mobile / Max-Q {snip} -- Resolved by: cycle power, then when manufacturer logo appeared, since UEFI enabled, tapped {Esc} to go to GRUB Menu, chose top item, and it loaded the Cinnamon Desktop Environment. Took several power cycles to get the {Esc} tap duration just right to avoid **grub** **grub** **grub** *all the way down...*