Can anyone help me I accidentally deleted the whole path in system variables while I was setting up the android studio and Java SE 8 . I have reboot my computer several times what can I do to restore my path in system variables

This is a bit off-topic but anyways... If you didn't save it, it's gone. Maybe another user has the path still defined? You could log in as this user put the path from there in a file you can access and then log in with your account using the file to copy the other uses path.

I didn't helped as I did it as an admin