HP laserjet MFP M28-M31 Everytime I sleep computer the printer goes offline

[TerryR1508]

If I leave my computer in sleep mode every time  I try to print afterwards it is offline . I go to Help Doctor and it fixes it each time.

This has only occurred since I keep getting very annoying message saying cartridge low, after every page printed. The cartridge is fairly new. How do you switch off this very annoying message?

[KrazyToad]

@TerryR1508

Welcome to HP Community

I have gone through your Post and would like to help

I suggest you perform a Printer Reset and also ensure the Firmware us up to date

- Turn on the printer.
- Wait until the printer is idle and silent before you continue.
- Disconnect the USB cable from the rear of the printer. If your printer has a network or wireless connection, leave it connected.
- Remove the ink cartridges from the printer and clean the electrical contacts with lint free cloth
- With the printer turned on, disconnect the power cord from the rear of the printer and from the wall outlet or power strip.
- Wait at least 60 seconds.
- Plug the power cord back into the wall outlet.
NOTE: HP recommends connecting the printer power cord directly to a wall outlet.
- Reconnect the power cord to the rear of the printer.
- Turn on the printer, if it does not automatically turn on.
- The printer might go through a warm-up period. The printer lights might flash, and the carriage might move.
- Wait until the warm-up period finishes and your printer is idle and silent before you proceed.
- Reinsert the ink cartridges, and then close the ink cartridge access door.
 

Link: https://support.hp.com/in-en/document/c02919168

Next assign a Manual IP Address .

1) Obtain the IP address of the printer – You can touch the “wireless” icon on the printer control panel to obtain the IP address.
2) Type the IP address on your web browser to obtain the printer EWS page on your computer.
3) Go to "Network" tab - General - Select "Network protocols" - Select "Enable IPv4 only" (or similar) - Apply the settings.
4) Go to the “Network” tab – Click on “Wireless (802.11) – Then click on “Network address (IPv4)
5) Click Manual IP
6) If you see a Suggest a Manual IP Address button, click Manual IP address, and the Manual IP addresses are automatically filled out for you.
7) If your page does not have a button to suggest a manual IP address, type the IP address, subnet mask, and default gateway using the numbers shown in the report you printed.
 

Keep me posted how it goes

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