Windows 10 is supplied by Microsoft with Edge, the successor to its Internet Explorer browser (although IE is still present, Microsoft has recently announced that its days are numbered). However, for many individuals, no matter what Microsoft wants, using Chrome or Firefox is the norm.
Safe Mode is just what you would expect-a secure way to boot up a PC and run the system without startup apps and only essential drivers, which should hopefully allow the computer to boot effectively when it won't otherwise because of some problem or other.
