Ubuntu and win7 booting problem

[sobat]

Hello,
I installed ubuntu and now it does not show up on my computer at all, and does not give me the option to run it! and windows 7 starts automatically without any option of ubuntu!

 

[bmouring]

This sounds like the old "installed Windows after Linux" issue (windows will overwrite the bootloader with it's own, preventing you from booting into Linux).

This guide should get you back to dual-booting