I have no idea where did my first post go about this problem. I can't see it anywhere, so I'm reposting it.
After I updated the BIOS, and after the computer rebooted, I kept getting this A disk error occured... error message. I know I had the correct version of the BIOS update and I know there is nothing wrong with the HDD. I removed the CMOS battery for 15 minutes, that didn't do the trick. The only option left was the .BIO. Switched the CMOS jumper to recovery mode, but there is no post, only black screen. Put the jumper back to normal mode, I get the post, but the recovery does not work. The main problem now is why is switching the CMOS jumper from normal to recovery, does not work.