Morning or evening wherever you are, I recently bought a new PSU, plugged it in to both my HDD, and after BIOS recognises both HDDs, I get the message "Disk Boot Failure Please insert boot disk" or something along those lines. Anyway with the old PSU plugged back in both disks will work and system will load normally. After thinking the PSU was faulty I randomly tried starting up using my new PSU with only my primary HDD in and viola, the thing boots up, only now I have no back up disk connected. I guess my question would be why such a conflict, that when both HDDs are plugged in with the new PSU the system will not load, but with only main boot HDD in, system loads perfectly. Surely a backup disk, with no boot info on it wouldnt' cause a boot failure, and why does this only happen with the new, better, PSU. Hmm.