Windows 10 error. Automatic repair Couldn't repair my laptop

Hello guys,
I buy a new brand laptop before a few months ago, after updating windows 10.
I found some issues after updating like the Mouse cursor not showing properly and some times I couldn’t sing my laptop and taking a long time for signing.
I was trying to reset my laptop a couple of days ago and after a few failures I end up with a blue screen saying automatic repair couldn’t repair your pc.
so I was thinking I should restart my OS but the problem is for restarting OS, I have large data suddenly I can’t do it.
I saw a few tutorials but I couldn’t be fixed it.
I shared about this type of problem with my friends and colleagues and they also trying to solve it.
If you are faced with these issues or anyone knows then you can share your ideas.
Thanks for helping us.