Preupgrade F14 -> F15 Fails

[Dave Cross]

I have two Dell PCs - a Dimension desktop and an XPS laptop. They are
both running Fedora 14 and I have tried to upgrade them both to Fedora
15 using preupgrade.

In both cases, when I reboot and select the "upgrade to Fedora 15"
option, I'm just presented with a blinking cursor in the top left-hand
corner of the screen.

Can anyone suggest where I should start to debug this issue?

Thanks,

Dave...

-- 
Dave Cross :: dave at dave.org.uk
http://dave.org.uk/
@davorg