Your hard drive, or also called harddisk, is a gigantic diskette in your computer. It is one disk big enough to store you Operating System, games and programs. Without it, your PC is just an empty shell.

Check Your BIOS

Better beware of older systems with large drives. If you have an older motherboard, your BIOS might not recognize harddrives larger than 2.1 GB. Hopefully, your BIOS is EPROM which means although read only (noticed the ROM?) it can be edited by authorized editors. Nearly all newer motherboards support that. All you need to do is to go online, go to your motherboard manufacturer’s website and try to download a flash BIOS update. Install it and it should be done.
» Read more: Diagnose Hard Drive Failure | Troubleshoot Hard Disk Problems