My PC is taking a long to start

My laptop windows 10 all of a sudden started to freeze or takes a long time to start after I enter the password. This all happened today after I was working on a website
Could it be from having too much data on my laptop? I am on my desktop but it's not responding. Pls pls someone I need advice
Thank you
 
Did you buy this laptop with Windows 10 installed or did you upgrade it to Windows 10 recently?
 
Back