Computer was working fine one day and then next day I went to turn on and received the following message “Disk boot failure, insert system disk and press enter” – I’m running Windows XP on this PC. I’ve since tried to reboot in safe mode (F8 and then the F6 option too), but no luck neither will go to the next screen. Then tried, to reboot with the Windows XP disc (the original one not a copy) and attempted the steps for repairing (first option “To set up WINDOWS XP now, press enter”) however I didn’t even get to the next step as the computer could not find the hard drive. So I F3’d to exit. I’ve since, tried putting the hard drive into another computer but it didn’t even recognize that it existed (but not entirely sure I did this right – you just plug in the same way?), and also tried rebooting the PC without the hard drive and still received the same black screen and message.
This area of computers is not ‘my thing’ so I'm concerned I may have missed something or not checked something correctly. I would really love to retrieve the data files on the hard drive if it's possible. I’m hoping someone can give me advice on the following:
1. Do you think my hard drive is totally dead and I should send it to computer heaven? How can I check to be sure?
2. If there is hope it’s ok, what’s the easiest way to copy the data from the hard drive using another computer?
One other thing I just of thought of which may or may not be relevant, the hard drive was replaced about 12 months ago by someone else when the computer displayed the blue screen and would not boot up etc..
Thanks for your time.

Kat