If your DVR has a login screen like the one in the picture, it probably uses the chip that works with the DVR password generator. DVRs that are known to accept this type of reset are Luxvision 5716, 6008T-EL, HA-1648, CP-Plus, Citrox, BB-4CH, Sansco, Kare and other generic brands such as “H.264 network, H.264 DVR”, etc. Several companies buy unbranded Chinese DVRs and put their own brand, so when you turn the equipment on you can see that the DVR’s menu is similar to the ones used by generic DVRs because they use the same chip.