I hope that you can change "nope" by programs like ccleaner ,backup the system and important documents ... consider good use of Malwarebytes as on-demand scanner as well as using another browser, this course if you want to become more protected while you surf through the internet
important extensions: WOT(web of trust) for check all the links
and block malicious ones, and HTTPSeverywhere (HTTPS Everywhere is a Firefox, Chrome, and Opera extension that encrypts your communications with many major websites, making your browsing more secure).
...and you should consider using sandboxie to browse safely.