Micromax A104

guys i am using micromax a104 from 10 months it was working fine..but now suddenly some ads started coming someone suggested me to factory reset my mob so i do as he said but now when i resetted my mob i was not able to sign in Google accounts it was saying "there was an error communicating with google.
..... But when i updated google play services then i started sign in my account and it continued sign in and goes on signing in for 30 minutes or more and does not sign in ...pls ...help me how did i sign in google account...