Ubuntu won't boot with Windows7

The GRUB Bootloader is missing. Follow these steps to reinstall GRUB.

1. Make a new Ubuntu live CD and boot from it.

2. Install boot-repair using these commands:

   sudo add-apt-repository ppa:yannubuntu/boot-repair
   sudo apt-get update
   sudo apt-get install -y boot-repair
   boot-repair
   

   

3. Click "Recommended repair". This will reinstall GRUB in the adequate disk(s). Then reboot.

Did you use a USB to install Ubuntu? A common problem recently is that grub has been installed to the USB drive, and Ubuntu will not boot without booting the USB, so test that. If this is the case then have a look at our guide on re-installing grub.

Have a look at this page on our website for more details.