@donald8
Welcome to HP Forums,
This is a great place to get support, find answers and tips,
Thank you for posting your query, I'll be more than glad to help you out 🙂
I understand you've upgraded from windows 8.1 to windows 10 and now the PC doesn't go past the HP logo screen,
Don't worry, I'll be glad to help, however, to provide an accurate solution I need a few more details:
What is the product number of your device? Click here for details
How did you upgrade the OS, did you do it via the internet or did you install any retail versions of the OS?
In the meantime, please follow the steps mentioned here:
Click here for steps on resolving issues with computer not starting.
Let me know how that pans out,
Feel free to post your query for any other assistance as well,
It's been a pleasure interacting with you and I hope you have a good day ahead.
If you wish to show appreciation for my efforts, mark my post as Accepted Solution.
And click on the Purple Thumbs up icon at the bottom of my comment.
Regards,
Riddle_Decipher
I am an HP Employee