Does firmware corrupt on hp pro 400 color laserjet 451dw disable the control panel?

SOURCE: HP Color LaserJet 2550n

Are you using generic toners or HP branded? Try to reseat the yellow toner. The page counter can't be reset and should not be. This unit uses chips to recognize the toner level. Generic toners don't always have good chips on them.

SOURCE: Firmware updates for hp CLJ 47000dn

you can down load and software and firmware for free from HP's website.

hope this helped
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SOURCE: HP Color Laserjet 2600n Color Alignment

I own a HP 2600n and I had the same problem the way I fixed it was hold both arrow buttons in the turned off the power for 10 seconds while holding the buttons in then turned it back on then released after 3seconds the reset my defaults this cured my problems

SOURCE: HP laser jet 1522nf mfp ( firm ware corrupt ready 2 download)

Perform the following troubleshooting in the order listed:

1. Turn off the printer, with the communication cable still attached.
2. Clear the print spooler by doing the following:
1. Go to Start then choose Run .
2. Type net stop spooler , and press Enter .
3. The Windows XP spool directory is located at: C:\WINDOWS\SYSTEM32\SPOOL\PRINTER ; Delete every file within this folder.
4. Go to Start , then Run , and type net start spooler , and press Enter .
3. Manually delete and reinstall the driver:
To uninstall printer driver, refer to the following steps:

1. Open Printers folder and right click the driver that you wish to delete.
2. Within the menu, select Remove .
3. For the confirmation message displayed, click Yes .
4. Right click the Printer Folder and select Server Property .
5. Click Drivers tab, and select the driver for deletion. Click Remove .
6. For the confirmation message for the deletion, click Yes .
4. Install the printer driver manually as follows:
1. Select the Printers and Faxes option from the Start menu.
2. Click "Add a printer" then, on the resulting "Add Printer Wizard" dialog, click Next.
3. Ensure the option "Local printer attached to this computer" is selected. Untick the checkbox "Automatically detect and install my Plug and Play printer". Click Next.
4. Ensure that the option "Use the following port:" is selected then select the appropriate port from the drop-down choice box. When choosing port, use one of Virtual Printer Ports for USB to which is your printer connected to. Click Next.
5. Click the "Have Disk..." button. On the "Install From Disk" dialog, click Browse... then navigate to the appropriate directory to which the software/driver extracted.
6. Select an inf file then click the "Open" button. Click OK on the "Install From Disk" dialog.
The Add Printer Wizard will start to copy driver files to the PC.

5. Run the firmware upgrade with the printer turned off so that the printer accepts the firmware only after the entire file is spooled.
6. In the firmware update program's window, choose your printer (manually installed) and press Send Firmware button, and wait for the firmware to be spooled completely.
7. Power-on the printer.
8. During the printer firmware update, the liquid crystal display (LCD) on the printer control panel will display Printing Document and will change to Erasing . After a short while, the LCD display will change to Programming . After a short while, the LCD will display complete The Ready LED on the printer will start flashing. The printer will automatically power off and then back on to reboot, and will make noises similar to that of a power-on operation.

Mark Schmit

• 1915 Answers
• Posted on Mar 05, 2011

SOURCE: My hp laserjet M1522nf is

You need to connect the unit via USB and then run the HP firmware update utility so that the current firmware can be installed. This error is usually caused when a firmware update is interrupted. Current firmware for this unit is 20100902.