I tried to resize my partition using gparted and i force stoped the process and accidently canceled the rollback warning. Now my system works fine but i checked the dst long test via F12 and found this.
** Hard Drive 0 - DST Long Test **
Started: 10/29/2015 14:58:12
Ended: 10/29/2015 16:34:57, Elapsed time: 01:36:45
Test Results : Fail
Error Code : 2000-0142
Validation : 109490
Msg : Hard Drive 0 - S/N 4428SWJAS, Long self test unsuccessful.
What should i do ?