Is this wireless adapter installed by factory? The error message code 45 indicates that the hardware is not connected. Let us know this piece of information before we go any further so we can find the best way to help you with this.
Inhave had it working earlier however after a restart, it soon disappeared again. I managed to get it working when I did another factory reset.
Also just to add..
Just another example of it not working...
Was working and connected to Wifi
Restarted laptop - Was fine
Switched it off and back on - Wifi connection has now gone and the Intel Wireless AC 7625 shows up as code 45.
I Have checked the bluetooth and that seems to be working fully and have no issues there.
I have also disabled the windows 10 auto driver update.
We haven't heard from you in while so we would like to know if you had the chance to run the tool we indicated in order to obtain the logs.