But for now let's get more details. Again, such is asked each time you post.
"If you're asking for technical help, please be sure to include all your system info, including operating system, model number, and any other specifics related to the problem. Also please exercise your best judgment when posting in the forums--revealing personal information such as your e-mail address, telephone number, and address is not recommended."
As to safe mode, any search engine finds how to get there so I'll stop here.