I can't log into MINECRAFT even though the mojang thing is working and everything is ok. But it says "Cannot connect to mojang" I have a macbook pro and Iv'e been using my slow old Toshiba I got 5 years ago. If you have experiance witht this or know how to solve this please make a comment bellow. And yes my internet is 100% working. And my MINECRAFT worked last night. | | | \/
Try deleting your entire .minecraft folder and re-download it and see if that works. Also it may be your wi-fi connection, unless you are able to connect to other websites, etc.