This is a recommendation for HP SmartFriend service. At the time of this writing, it costs $50USD for the first month and $15USD thereafter. The support staff spend as much time with you as necessary. The technicians are in India; they are every well spoken and educated.
I have an HP laptop that I use as a desktop replacement – along with a Thunderbay 8 from OWC. I was having a problem that was difficult to solve. Running Windows 10, the laptop would freeze at random times. I tried researching on my own for an embarrassingly long time. HP has remarkable built-in tools but everything indicated that the hardware was clean. And it turns out there was nothing wrong with the hardware. Eventually I contacted HP support and signed up for “SmartFriend” service. After they confirmed everything I had done, what solved the problem was to perform a “Windows 10 reset.” This is not quite as drastic as you might think, but definitely not your first choice. You do have to reinstall your applications. The system has performed well since the reset.
If you have an HP computer platform with a problem you can’t solve on your own, sign up for this service. You will not regret it. The link is https://www.hp.com/us-en/services/consumer/smartfriend-overview.html — also there may be a promo code at the website for the first month.