To fix An operating system wasn’t found error on Windows computers, first check if the Disk Type is GPT or MBR, and then follow these steps.

When I do that I get "Error loading operating system" again. WTF? So, anyone know how I can fix this because right now I have a computer whose only function is BIOS ...

A bad system config error on a Windows machine can stop you dead in your tracks. Here are some things to try to troubleshoot and fix the pesky issue.