Unfortunetely @echolake provided totally unrelated instruction on how to reset NVRAM on some other printer (that has a display)

HP LaserJet Pro M14-M17 Printer Series - Blinking Lights HP LaserJet Pro M14-M17 Printer Series - Blinking Lights

Include keywords along with product name. Examples: "DeskJet 3630 paper jam", "EliteBook 840 G3 bios update" To keep the size and cost of the HP LaserJet Pro M15w to a minimum, the feature-set is also somewhat minimised. There’s only room for one paper tray, for example, and that’s limited to 150 sheets of A4, or A5 paper, or ten DL, or C4 envelopes. Other sizes can’t be fed inside.The M15w may be a very basic print-only monochrome printer with just one input tray that will only take A4 and a few smaller paper sizes. You won’t find fancy features like duplex printing here and if you require a flatbed scanner, then you should wait for the similarly styled HP LaserJet Pro MFP 28w. A nearby device that emits radio signals (such as a microwave or cordless telephone) might interfere with the wireless connection. Maximize your uptime with print speeds up to 18/19ppm.[4] Affordable, reliable performance from the start. Produce the professional quality you expect from an HP LaserJet, right out of the box. The detected OS is the operating system that we have detected you are using. We will offer drivers and other solutions in this OS first. If you wish to see solutions related to another OS, please select the preferred operating system and version and choose 'Change'

HP LaserJet Pro M15w Printer Setup | HP® Support HP LaserJet Pro M15w Printer Setup | HP® Support

The printer is either too far away from the wireless router, or too close to it. The recommended distance between the printer and the router is 1.0 meter to 1.5 meters (3 ft to 5 ft). Note: This tool applies to Microsoft Windows PC's only. This tool will detect HP PCs and HP printers. IEC 60950-1:2005 +A1:2009+A2:2013/EN60950-1:2006 +A11:2009 +A1:2010+A12:2011+A2:2013; IEC 60825-1:2014 / EN 60825-1:2014 (Class 1 Laser/LED Product); IEC 62479:2010 / EN 62479:2010; GB4943-2011 We were unable to find drivers for your product. Try manually selecting your operating system. If your operating system is not listed then HP may not provide driver support for your product with that operating system. nominal @ +/-10% (min 99V, max 140V), 50 - 60Hz nominal +/- 3Hz (min 47Hz, max 63Hz), 220V - 240V nominal @ +/-10% (min 198V, Max 264V), 50 - 60Hz nominal +/- 3Hz (min 47Hz, max 63Hz)Perform a wireless network diagnostic test using the printer control panel ▲ From the printer control panel, press and hold the wireless button for 20 seconds. Apple®OS X EI Capitan (v10.11) macOS Sierra (v10.12) macOS High Sierra, (v10.13); 1.5 GB HD; Internet required; USB Print speed is fast at 19ppm, but frustratingly, you can’t alter the speed, or quality of your printing. The print resolution is actually quite low at 600 x 600 dpi. There’s no scanner on this model, but the excellent companion app lets you utilise your smartphone camera to scan and print documents wirelessly. The free HP Smart app also lets you print from the cloud with support for Google Docs, Dropbox and Evernote and it makes it exceptionally easy to do so.

Datasheet HP LaserJet Pro M15w Printer

For this model? Nothing, only responses on forums always end up with "if that won't work let me know I will pm you the instructions" .... and are followed by 43 messages like "oh god I have got the same problem, please help!" Include keywords along with product name. Examples: "LaserJet Pro P1102 paper jam", "EliteBook 840 G3 bios update" From 123.hp.com: HP Easy Start (Guided Software Install for Windows and Mac); From HP.com for Windows OS: Full-solution software and drivers (Same solution as "Software Included"); Basic-solution software and drivers (with installer) Product Documentation and Support; From HP.com for Mac OS: HP Easy Start (Guided Software Install); For Mobile OS: See "HP Mobile Printing" (http://www8.hp.com/us/en/ads/mobility/overview.html); From In-OS app stores: HP Smart for Windows(HP AiO Remote for Win 8+); HP recommended printer drivers and software; From HP.com for printer administrators: Linux Print Drivers; HP Web JetAdmin Software (HP SNMP Proxy Agent); ReadIris Software Include keywords along with product name. Examples: "DeskJet 2130 paper jam", "EliteBook 1040 G3 bios update" Include keywords along with product name. Examples: "LaserJet Pro P1102 paper jam", "ProBook 440 G3 bios update"

I've tried soft reset, all possible combinations of pressing and holding buttons, mobile app, PC app, WiFi direct, and even WPS option... all of those tries miserabely failed. In accordance with the Microsoft Silicon Support Policy, HP does not support or provide drivers for Windows 8 or Windows 7 on products configured with Intel or AMD 7th generation and forward processors watts (active printing), 2.2 watts (ready), 0.4 watts (sleep), 0.1 watts (Manual-off), 0.1 watts (Auto-off/Manual-on), 0.4watts (Auto-off/Wake on USB)