Probeer programma boot-repair te installeren in Ubuntu en draai dat programma eens af !
install Boot-Repair in Ubuntu
Remark: this can also be performed from a live-CD or live-USB.
Either add ‘ppa:yannubuntu/boot-repair’ to your Software Sources via the Software Centre or, for speeds-sake, add it using a new Terminal session:
sudo add-apt-repository ppa:yannubuntu/boot-repair && sudo apt-get update
sudo apt-get install -y boot-repair && boot-repair
Boot-Repair can be installed & used from any Ubuntu session (normal session, or live-CD, or live-USB). PPA packages are available for Ubuntu 10.04, 11.04, 11.10 and 12.04.