its a new computer but it lacked any software?
Did you build it yourself? If so, check your hdd cables.
If you bought it pre-built (and legit), then the system builder by law should 'prove' the pc by installing an operating system on it.
Either way, check the ide/Sata/power cables on the hdd and on the ide/sata controller on the mobo. Oh, and as Nodsu said, check the boot strap in the bios.