Iam unable to login in my Linux mint machine with traditional login? But with same username and password iam able to login via putty?

I have set an username : bharath  and password also same... and for root user also same password. But now iam able to login with Putty as below. but in GUI iam not able to login ? please help me.....no error it is showing all the time it is again popping up for the login and password it is frustrating please help me?

bharath-virtual-machine ~ # su - bharath
#     # ####### #        #####  ####### #     # #######
#  #  # #       #       #     # #     # ##   ## #
#  #  # #       #       #       #     # # # # # #
#  #  # #####   #       #       #     # #  #  # #####
#  #  # #       #       #       #     # #     # #
#  #  # #       #       #     # #     # #     # #
 ## ##  ####### #######  #####  ####### #     # #######

####### #######
   #    #     #
   #    #     #
   #    #     #
   #    #     #
   #    #     #
   #    #######


 #####   #    #    ##    #####     ##     #####  #    #
 #    #  #    #   #  #   #    #   #  #      #    #    #
 #####   ######  #    #  #    #  #    #     #    ######
 #    #  #    #  ######  #####   ######     #    #    #
 #    #  #    #  #    #  #   #   #    #     #    #    #
 #####   #    #  #    #  #    #  #    #     #    #    #

 _______________
< Hi to bharath >
 ---------------
        \   ^__^
         \  (oo)\_______
            (__)\       )\/\
                ||----w |
                ||     ||
bharath@bharath-virtual-machine ~ $ id
uid=1000(bharath) gid=1000(bharath) groups=1000(bharath),4(adm),20(dialout),21(fax),24(cdrom),25(floppy),26(tape),27(sudo),29(audio),30(dip),44(video),46(plugdev),104(fuse),108(lpadmin),119(scanner),125(sambashare)
bharath@bharath-virtual-machine ~ $