hELP mE pls

I have a problem that I had like to talk about. My system was working fine the other day, but while copying a file by nero….the system hanged and I had to restart it. But I got a disk boot failure error. Then , I tried to run a windows xp installation CD, but that is also showing some error message during installation and the installation fails.I did check the bios settings and the disk fails to show…and had it checked on another system also…but bios cannot detect the hard disk.I think the disk is damaged or something like that.The disk has important data from my company’s point of view…..that I need to recover.
Please let me know if there are any ways to get my data back from this disk!!!!

try to set up the windows again but don't format the disk. go to repair options then try chkdsk /r/p.. it will repair your corrupted windows.. hope it will help..