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A few days ago, I bought this laptop, and now I want to change its OS (Windows 7) to Ubuntu but failed.

I burn it to a USB stick, set BIOS to startup from USB and it worked. I followed the install steps to install Ubuntu, it was a success. But when I restart the computer after installation, it's not working, it'll be continual reboot at start up until I shutdown or let it start up from USB stick.

Can anybody to tell me this is why? Please help me to resolve it.

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up vote 2 down vote accepted

It might be because you installed GRUB on a partition. To resolve this:

  • Boot from the Live USB.
  • Open a terminal (Ctrl+Alt+T).
  • Run the following commands:

    sudo grub-install /dev/sda
    sudo update-grub

    Here, /dev/sda is the name of the harddrive. To check the name of the harddrive, run sudo fdisk -l.

enter image description here

In the screenshot, the devices /dev/sda1, etc are the partitions, whereas /dev/sda is the harddrive.

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