Win 10 stalls on startup

Upgraded Hp Pavillion Dv7 laptop from windows 7 Ultimate to windows 10 Pro. Now when computer turned on gets to screen showing 4 section window and rotating circle of dots. After about 6 seconds dots stop, hard drive light goes out and then nothing. Have left computer set for 2 hrs. and no change. If I use power button to force hard shut down and then immediately press button again to start, will go thru startup process just fine. Have tried startup repair to no avail. Have reinstalled windows 10 from USB drive no change. When it does start it is slow to get to desktop. Seems to work ok once we get into windows, just need help figuring out how to get it to boot right on first startup.
Really appreciate any and all suggestions.

I would start by turning off fast startup in Windows 10 :

Fast Startup - Turn On or Off in Windows 10 - Windows 10 Forums

NavyLCDR said:

I would start by turning off fast startup in Windows 10 :

Fast Startup - Turn On or Off in Windows 10 - Windows 10 Forums

Thank you for reply. I have talked to Microsoft several times on this, and you are the only
one that has had a fix. Wife now can use computer without frustration, and as you kow
if the wife is:) everyone is . I even paid for Microsoft Assurance plan and they couldn't
or wouldn't help.
Thank You Thank You.