I copy Alredzen's post from that link, hamluis thank you, as it's my position too;
I have tried to above suggestions to have the computer to start normally, unfortunately, nothing has worked. I tested the memory with memtest and it came with no errors. I even purchased new ram: but the problem does not appear is the ram, as it came out okay. The problem now is for the computer to recognize the hard drive. It does not recognize the hard drive in BIOS and thus it is unable to load the OS. I was unable to perform a repair on the OS due to the same issue: no hard drive detected. I have checked the all the cables are firmly connected and that BIOS has the auto detect option enabled, also the boot order to boot from hard drive, but it does not recognize the hard drive at all.
I have tried several other things, like inserting the new RAM in different spots, but nothing has worked; the computer will not recognize the hard drive at all, not even in BIOS.
Any other suggestions will be greatly appreciated.
Thank you. "
Edited by wuzzo, 23 December 2015 - 04:45 AM.