What to do when the NVR is stuck where the system's initializing?
1 Unplug all other cables from the nvr, including network cable, hdd, flash disk, just connect it to monitor.
2 Power off and then power on, reboot, repeat this for several times, you might get a chance to get into the system once. Then you can upgrade the system to the latest version.
3 Now prepare a usb flash disk, make sure it is FAT32 format, 2.0. Format the usb disk first on pc and then save a file to the it. The file is help.rom.
You can download it here: http://techage.com/download.php (Help.rom)
4. Power off the nvr first, plug the usb disk on the usb port of the nvr, then power on the nvr. Wait about 3-5 minutes, see if anything changes.