Reset process halted at 66% completion.
Reset process halted at 66% completion.
You lack a backup, so expect extra steps if the system freezes at 66% and isn't improving. Turning off your PC by pressing the power button may prevent it from booting; resetting it later is possible but unlikely to help. The safest choice when stuck is using a Linux live USB to access your data. Copy it to an external storage device. Once you're sure you have everything, reinstall Windows by formatting the drive and starting fresh. A detailed guide is available if needed.