I have a windows XP pc which will occasionally come up with a "Primary drive 0 not found, Primary drive 1 not found" error on boot up. It will ALWAYS find the hard drives second time around when you use F1 to boot it up. I have opened it up today and reseated the cables, I've restarted it 5 times but I haven't been able to recreate the error. I'm just dubious about that actually being the cause seeing as it has never failed to boot a second time - surely if the problem was a loose cable, its behaviour wouldn't be so predictable. Is there anything else I should try to prevent the issue occurring again? It is a Dell Optiplex GX270. Thank you!