The boot drive is supposed to be connected to SATA 0. Try changing the boot drive to sata 0 and make sure that port is turned on in the bios. Always leave that sata port active.
The manual is here--
See troubleshooting on pg 61. Try booting. to your repair disk or your windows 7 disk. See this--
https://neosmart.net/wiki/no-such-partition-grub-rescue/ Did you ever install Linux?
The 1,2,3 lights is "Another failure" which is not helpful since it means anything could be wrong even a failed motherboard.
Thanks for the reply, Mary. Yes, my boot drive is connected to sata 0 but the bios doesn't show any description for it.
I did run Ubuntu from a CD once many years ago but never got the system to dual boot so I never tried it again. But that was years ago. No problems until now.
I did try booting to a windows 7 disk once but it said I had no hard drives which was odd. Hence the reason I suspect a controller or motherboard may be acting up.
I just rebooted to try and boot from the CD and I get the screen where I can select what device to boot to, but when I select CD, it gives me the error about the secondary master hard drive again and I can't get past it. So I can't boot from CD either. Yikes!