Trial Windows 7 and my Vista are not booting

I have a Window Vista Home Edition on my system. I downloaded a trial version of Win 7 and install. The Trial version is not booting and my window vista is not booting as well. I can not do anything on my system now. Pls can anyone help out, I want to get this sorted out, pls. I don't have any backup of my files.

Hello Bayodare, and welcome to Vista Forums.

How did you install the Windows 7? Did you install it in a dual boot with Vista on a separate hard drive or partition, or ....?

For now, you might see if doing a startup repair may be able to allow them to boot afterwards.

Hope this helps,
Shawn