I tried to install ubuntu on my computer, but something terrible happened. Now I can't boot into ubuntu . I tried to install Ubuntu on another partition, it succeed. But after rebooting, it automatically windows, can not read installed systems.The boot menu doesn't appear on the screen. But when i hold down shift key i manage to enter in ubuntu. In ubuntu i also installed boot repair and it gives the url: http://paste.ubuntu.com/12335843/
please someone help me. Thank you