Cold reset and reset NVRAM HP LaserJets Printers 1100, 1200, 2100, 2200

NVRAM reset is reset HP printer to the default values and Cold  reset is reset computer setting to factory setting. I dont know what differences the both reset methods. Here the Cold reset and reset NVRAM methods for HP LaserJets printer 1100, 1200, 2100 and 2200

Cold reset and reset NVRAM for HP LaserJets 1100, 1200 Printers

Cold reset on the HP LaserJets 1100, 1200,  start with printers on, press and hold the Go button for 5 seconds. The methode will reset the printer.

To reset the NVRAM.

• Turn the HP LaserJets 1100, 1200 printers off
• Press and hold the Go button for 20 seconds while powering on the printer.

Printers HP LaserJets 2100

To perform a cold reset,

• Turn the HP LaserJets 2100 printer power off
• Press and hold the JOB CANCEL button.
• Turn the printer power back on and after all the LEDs come on release the JOB CANCEL button. A cold reset changes most system parameters in NVRAM to the factory defaults. The JOB CANCEL button must be released within 20 seconds after all of the LEDs come on; otherwise, an NVRAM initialization is performed instead of a cold reset.

Reset Instructions for Printers HP 2200 LaserJets

Cold reset

• Turn the HP 2200 LaserJets power off
• Press and hold GO
• Turn the printer power back on and continue to hold GO until the Attention light turns on
• Release GO
• The device lights will begin cycling from front to rear
• The cold-reset process will run until completion and the device will go to the ready state.

NVRAM Reset

• Turn the HP 2200 LaserJets power off
• Press and hold GO.
• Turn the printer power back on and continue to hold GO until the Attention, Ready, and Go lights turn on.
• Release GO.
• The device lights will begin cycling from font to rear
• The NVRAM initialization will run until completion and the device will go to the ready state