Re: HP Color LaserJet CP4525 5/6 E/F

One thing you can try which may or may not work. You will lose some settings and information, but in your case it should not matter. Perform a NVRAM reset. Instructions below:

NVRAM initialization
CAUTION: Initializing NVRAM resets the serial number, the event log, the page counts, the calibration
settings, and the EIO card. Use the SERVICE menu to restore the serial number and page counts. You
also need to reconfigure any computers that print to this product to recognize the product. Initialize
NVRAM only when absolutely necessary. In most situations, use a cold reset to reset product variables
but still retain the needed values in the SERVICE menu.
NOTE: Print a configuration page before initializing NVRAM.
From the configuration page and supplies status page, gather the following information:
● Total page count and color page count
● Serial number
1. Turn the product on and watch the control panel display.
2. When the display shows the memory count, press and hold the down arrow until all three lights
on the control panel are lit.
3. Press the up arrow .
4. Press the Home button. The message SKIP DISK LOAD displays on the control panel.
5. Press the up arrow until NVRAM INIT is highlighted, and then press the OK button . The product
initializes NVRAM and then continues its power-on sequence.