8.) Your desktop gets cluttered with pop-up windows whenever you launch a browser. Your device is infect with:

spyware
ransomware
adware
popware

Based on the symptoms described, it appears that your device is infected with adware and popware. Adware refers to malicious software that displays excessive advertisements on your device, usually in the form of pop-up windows, while popware is a term used to describe software that generates an excessive number of pop-up windows. Both adware and popware are forms of unwanted software that can cause clutter and annoyance on your desktop.