My laptop conf , core i5 2nd Gen , 6 GB ddr3 ram , 750GB , intel HD3000 Graphics. I think hw configuration is not a problem here. I tried from terminal at first but had some error message , can't remember what that message exactly.
By the way , I set up windows again and repaired boot , now everything is running fine. Thanks to everyone for your help. -- Ubuntu Bangladesh https://lists.ubuntu.com/mailman/listinfo/ubuntu-bd
