I dunno how that happened but before today I could right click on any folder and there would be and an option Git Bash here
. But today I dont have that option. Anyo
Steps if you can't use the reinstall metod.
Use REGEDIT
1/ Open regedit (search it if needed)
2/ Go to 'HKEY_CURRENT_USER/Software/Classes/Directory/Background'
3/ Create new key 'shell'
4/ Create new key 'Git bash here' (or whatever name you want to see in the menu)
5/ Create new key 'command' (must be named command)
At this point point you'll have
'HKEY_CURRENT_USER/Software/Directory/Background/shell/Git bash here/command'
6/ Edit the value of the command key as follow 'pathToGit/git-bash.exe'
Update or open new windows explorer and you'll see it when right clicking.
Image to sum this up :