Lenovo laptop stays with lenovo starting screen.

Hello,

I have updated to window 10 and used with no issues till yesterday night. This morning when I start my laptop it is keep on displaying the Lenovo Start screen, not starting/entering Windows.

I heard that fan is working inside the computer. I replaced the battery but no luck.

Please let me know, what to do my problem..
Thank u very much, your advise is very worth for me.