|Depends on what the problem is. If the OS is corrupted or the hard drive is bad then changing the bios setup options won't help.|
But assuming that's not the problem, the manual for that system should tell you specifically how to set up the options. But in general you need to make sure the IDE controllers are enabled and the drive is recognized.
Then in the boot order, you need to make sure the hard drive is there, probably set it as the first boot device. In some cases, even though a drive is on the list it needs to be enabled as a boot device. If that's the case with yours you need to make sure there's a checkmark by the drive on the list.
Real men don't use AntiVirus; they just reformat