Where is Factory Reset button on Lorex security system model LH318000 Bought in 2008

That depends on what the system is.

call lorex they will tell you how to reset.

Samsung Security DVR Default Password

For nearly all Samsung Security DVRs, the default password is 4321. If it hasn't been changed since setup, then you can just use that to access the DVR. The default password is included in the reset procedures for completeness. If you have changed your password or access code for your Samsung Security DVR since it was setup, or if you changed it during the initial setup, use that password in place of the default password. The password will be the latest password that was set on the DVR. If no password has ever been set, then it will be the default.

Steps to Reset your Samsung Security DVR

Samsung Security DVR Reset Procedure #1

1. Reset the unit to factory by pressing both [MODE] and [PTZ] button for 5 seconds
2. Then enter the 4321.

Samsung Security DVR Reset Procedure #2

1. Reset the unit to factory by pressing both [MODE] and [CH2] button for 5 seconds
2. Then enter the 4321.

Samsung Security DVR Reset Procedure #3 This reset will work on Android based DVRs only. All steps are performed on the device itself.

1. Turn the device Off
   Wait 2 minutes
   Press and hold the following buttons
   • POWER,
   • HOME
   • VOLUME UP
2. The unit should power on. Once it does, you can release power.
3. Use the volume UP and Down buttons to select "Wipe/Factory Reset" from the recovery menu.
4. Activate the reset using the HOME button.
   When the DVR goes through it's setup again, it will be at factory defaults. The password will be 4321.

Samsung Security DVR Reset Procedure #4 This reset will work on SDR models. It may also work on other models.

1. With just the cameras showing, press the following in quick succession using the remote:
   • Freeze
   • Alarm
   • Freeze
   • Alarm
   • Freeze
   • Menu
   • Enter
2. Make sure you press them quickly, one after the other. If it doesn't work the first time, try doing it several times. It can take many tries to get the timing right. If/when it works, you should get a screen that gives you the option to reset.

Samsung Security DVR Reset Procedure #5 This reset will work on SDR models where procedure #4 failed. It may also work on other models.

1. Press the DVR Button to place the system in DVR Mode
2. Press:
   • Freeze
   • View
   • Return

As with Procedure #4, you may need to press Freeze, View, and Return in in quick succession a few times to get it to work. The timing can be tricky.

Samsung Security Reset Procedure #6 Courtesy Sergio Ayala
To factory reset the SDR-B74301

1. Reboot the DVR
2. Once the DVR has rebooted, enter the following sequence on the remote:
3. UP, RIGHT, 5, 3, 3
4. You will be prompted to do a factory reset. Confirm

This has been confirmed by several people. Thank you, Sergio! If this works for you, please thank him in the comments below.
CCTV Networking Technical Support

Foloow the link to the user manual. https://www.lorextechnology.com/downloads/security-dvr/LH300-Series/LH300_SERIES_MANUAL_EN_R2_web.pdf

all eco series the reset code i have 2 codes one will work (723889) or (519070) i have use the (519070) on many Lorex eco2 DVRS'S and it work no problem i have many codes for many lorex DVR'S the codes are set by the manufacture date and model number of the DVR
MIKE
3*4*7*8*7*6*4*0*0*2

There should be a paper clip size hole somewhere on the back of the unit. If you depress the button in there it should be the reset. The problems sounds to me more of a hard drive issue though.

Select Start and press the Enter button to restore to factory settings

apparently lorex technology has good customer support
https://help.lorextechnology.com/
looked at the manuals from lorex they do not mention your issue

Ouch that's a tough one. You will need to go to the lorex console and reset the password for the account you're trying. If you don't have the administrators password, you will need to contact the system admin and ask them or reset the machine to factory defaults and set it up again, this time writing down the administrators password and the passwords for the access accounts you create during setup. It is after all a security appliance and there for pretty ridged. If all else fails, read the manual that came with the system, they're pretty straight forward. If that doesn't work call Lorex support they're a bunch of very friendly guys. They can give you setup help but as it is a security device, they won't help with passwords.

Should be1234 unless u have changed it