I have a "no computer connection" message on my HP officejet pro L7590.

[Larry868]

I've tried everything I know, wizard, install drivers, you name it. Need help.

[Jeet_singh]

Hi @Larry868,

Thanks for engaging in HP support Forums! This is a wonderful location to converse with the community, get assistance and find tips! I understand you are having issues related to your HP Printer. Don't worry as I have a few suggestions which should help you resolve this issue.

To provide you with an accurate solution, I'll need a few more details:

Have you recently made any changes on the printer before the issue started?

How is the printer connected? USB/Wireless

Have you tried to run a HP Print and Scan Doctor?

Are you able to make a copy from the printer?

In the meantime, let's try these steps here: 

Please make sure that the printer is connected directly to the wall outlet and not to the surge protector.

With the printer turned on, disconnect the power cord from the rear of the printer and also unplug the power cord from the wall outlet.

Remove USB cable, if present.

Wait for 2-3 minutes, press and hold the power button on your printer for about 30 seconds to remove any additional charge.

Now plug back the power cable straight to a wall outlet without any surge protector or an extension cord and then plug back the power cord to the printer.

Turn on the printer and wait till warm-up period finishes and the printer is idle.

I would start by checking the installed printer software by downloading and running the HP Print and Scan Doctor. This tool can diagnose and fix many printing and printer software related issues. Please use this link to help you with that information: http://hp.care/2biN2XE 

If the issue persists, then try the steps below:

First, unplug the USB cable from the printer if present.

Go to Control panel – Programs and feature – Select all the HP OfficeJet printer entries and uninstall them.

Now go to Control panel – Devices and printer – Select all the printer entries and remove the device.

Restart your computer.

Click the bottom-left Start button on desktop, type device manager in the search box and tap Device Manager on the menu.

Once in device manager, click on the view tab in the top & choose “Show hidden devices”.

Then from the device manager list, check the entries under “Printer” – If there are any entries, please right click and choose “uninstall” – In the confirm device un-install pop-up, make sure you select the box which says “Delete the driver software for this device".

Also, check the entries under "printer queue" and "imaging devices" and repeat the same exercise. Delete any printer entry or any entry which says “Unknown device”.

Once done, close device-manger. Then press the "windows key" + "r" to get the "Run" window open - Type "printui.exe /s" (there is a space between .exe & /) and press enter.

Under print server properties, go to drivers - remove any entry there as well.

Again, go to run window, type – “c:/programdata” – Go to Hewlett Packard folder, remove any printer related folders & files.

Open run again, type “%temp%” and press enter to get the temporary files. Delete all the files here. Skip the items which cannot be deleted.

Now restart your computer again.

Open the Run window again, type “services.msc” and press ok to get services window.

Scroll down to “Remote Procedure Call (RPC)” – right-click and go to properties. Make sure the service is started and startup type is “Automatic”.

Now scroll up and go to “Function Discovery Provider Host” – right-click and select properties – Change the startup type to “manual” and start the service.

Repeat the same exercise on “Function Discovery Resource Publication” as well.

Click on this link: http://ftp.hp.com/pub/softlib/software12/COL32021/mp-79356-3/OJProL7X00_Full_14.exe to install the printer software.

Connect the USB cable only if prompted and follow the on-screen instructions to complete the installation.

Please let me know if this resolves the issue, or if you require further assistance!

Eagerly waiting for your response!

I hope you have a good day ahead,

And Feel free to ask your queries as this forum has some of the best people in the world available and ready to help.

Regards,