There won't be one for a Desktop as they don't normally come with WiFi built in. Try this driver:

Broadcom Wireless LAN Dual Band Driver

Also, read through this, especially the before and after...

Hmmm,, the only computer I can find for HP Envy 700-414 is a Desktop, no Laptops listed at the HP site. Are you sure that's the correct model number?

What is the full model number of the HP Envy laptop?

Is there a switch to turn WIFI on or off? If not, is there a Fn key (often Fn+F4) to do this?

Are there any yellow marks in Device Manager?