Intel mac mini wont boot after system restore

I ran the system restore on my intel mac mini using the genuine leopard cd that came with it.
Now it wont boot. When you press power the light comes on but it does not chime and there is not video output to any monitor.
Anyone know what could be wrong?

Welcome to Apple Discussions!
You picked 10.4.1 in your profile.
Intel Mac Minis at minimum came with 10.4.4.
If it came with a 10.5 genuine DVD, it most certainly was not running 10.4.1 or 10.4.4. Perhaps you mistook one Mac Mini install DVD for another? Does your Mac Mini have 4 USB ports on back? What does the 10.5 installer disc you used look like?