Notebook Hardware and Upgrade Questions

I purchased the Envy 360 and installed windows 10.  The keyboard stopped working.  I tried to restart etc. One thing that worked temporarily was uninstalling all the key boards then rebooting. worked for a while but then stopped working again. I did I bios update and repeated the process of unistalling the keyboards. Problem solved for a day. now not working again. The keyboard works before windows starts.  The most frustrating part other than the hours I have spent on my own and with IT toubleshooting is that the problem patched over a few times just long enough exceed the return time with the seller and Amazon. So now I will loose money if I return it now that it seems fairly clear that it is a ongoing problem that cant be fixed.  I hope HP will stand behind their product and fix this. I can not afford to buy another computer or be without one and I can't afford to loose hundreds of dollars trying to send it back now that the return date has passed [all because I was giving the company the benefit of the doubt and trying to troubleshoot thier product that should work properly to begin with - I should have returned it the minute it did not work properly instead of trying to get it to work consistently over the course of a month.