I have a problem when i want to install ubuntu using my flash drive. After I choose to install ubuntu along win 7,my laptop restarts and then I have to choose the boot device(my flash drive which contains ubuntu) otherwise it starts win 7.
Also when i choose the boot device,it starts the installation process again and from the beginning. model of laptop:Dell inspiron 5520 any help? thanks in advance.
Edit:I checked the disk management and there are 3 primary partitions and 1 "OEM partition".