Ordinarily, when the HP Recovery Media is available, HP will provide a link on the device drivers page that you can use to order it. Your device drivers page is here: https://support.hp.com/us-en/drivers/selfservice/HP-Pavilion-15-Notebook-PC-series/5355006/model/5444716
And ... as you can see ... there is no link to Recovery Media on that page -- implying that HP does not carry it, anymore.
However, if you contact HP Customer Support and provide them the model number of your PC, you still might be able to order it.
If you live in the US or Canada, contact information is on this page: http://www8.hp.com/us/en/contact-hp/phone-assist.html#section1
If you live elsewhere, contact information is on this page: http://www8.hp.com/us/en/contact-hp/ww-contact-us.html
NOTE: After you get through, stay on the line until you are finally able to talk to some one -- it can take a while!
If you have trouble finding a phone number, then try: 1 (800) 474-6836