What does it mean when blue light is blinking

[Robstah]

My printer works periodically and I cant Figure out the key.  
right now the blue WiFi light is blinking. 

[Dragon-Fur]

@Robstah 

Yes, blinking blue light indicates the wireless is off / not working.

If your printer is one of the new Deskjet 4100 series,

HP Gallery

Unbox and Set Up the HP DeskJet 2700 and DeskJet Plus 4100 Printer Series | HP Printers | HP

and

Technology Tips Gallery  From our HP Expert greenturtle

Technology Tips – YouTube Video Help for Printers

Look for your model of the Deskjet 4100 series.

For example,

HP DeskJet Plus 4152 | 4155 printer Unbox Setup Connect to 5Ghz Load paper Print/Scan alignment page

HP Deskjet Plus 4152 |4155 |4158 : Connect Printer to 5GHz network with HP Smart on Win 10 computer

HP Deskjet Plus 4152 |4155 |4158 : Download & Install HP Full featured Software on a Win 10 computer

Printer  Home Page - References and Resources – Learn about your Printer  - Solve Problems

 “Things that are your printer”

NOTE:  Content depends on device type and Operating System

Categories:  Alerts, Access to the Print and Scan Doctor (Windows), Warranty Check, HP Drivers / Software / Firmware Updates, How-to Videos, Bulletins/Notices, Lots of How-to Documents, Troubleshooting, User Guides / Manuals, Product Information (Specifications), more

When the website support page opens, Select (as available) a Category > Topic > Subtopic

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