Take the RunCore out and reseat it carefully. That's your first fix, then if that doesn't work, attempt to boot from it via USB. If that also fails use your original drive to boot from and attempt to retrieve any data you can and reformat the drive. If it reformats re-image it and reinstall. Hopefully that will fix it, if not then I'd say that it is borked.
Netbooks -> Mini 9 - 2gb Gskill low latency - Ubuntu 8.04
Asus Eee 701 4g - 1gb - Ubuntu 8.04.1
Desktops -> Phenom Quad @ 2.8 - 16gb - 4x Raptor X in RAID 0 - 2x 4870X2
Brisbane 1.9 @ 2.7 - 4gb - 80gb
Many others, all Linux.