Hi, thank you for contacting JustAnswer.com. My name is Russell. I will do my best to provide the right answer to your question.
That must be quite frustrating. I think that, with some patience, and attention to all the details needed, something may be made of it and it may be fixable.
First tell me, please: What shows on the screen when Windows 10 does not finish booting up ?
And how long does it take to get to that point, from the time of powering On the Windows 10 computer ?
Try pressing the F8 button just after turning it On... repeatedly. Do you get a screen with a highlight bar across it and some menu choices? one ought to be 'Safe Mode'.
Check your disc drives... is a CD or DVD disc in your drives? if so, remove all discs from CD or DVD drives, then turn the computer Off, then wait 5 minutes (or longer), then turn it On again.
See if those two measures have any effect on the problem... let me know what happens... I will advise you further.
Thanks for the Secure Remote Assistance request. Unfortunately, that's not appropriate for this problem: you cannot remotely control a PC that hasn't booted up yet.
Let me know what the simple procedures I recommended do... I can help you from here, this way, if you will follow directions please. Thanks.