Novice to Linux but not to computing.

Installed tinysofa with software RAID (was nice-n-easy)

Had it running ok

Then installed xfce desktop and spent ages setting up all the software
I wanted to use packages etc for PHP/PostgreSQL/Apache/SSH & C++ dev
and serving


when I rebooted I just get GRUB announcing itself "GRUB" and a flashing
underscore _ a bit of disk whirring then silence

is it hardware or have i screwed up the installation?

before I spend another day to reinstall and setup is there any way out?

Dearth Voider