Sounds like it was just about ready to die....
Not being "seen" by BIOS at startup is the first sign- sorry if that has happened.
What exactly did you try? Was whatever completed successfully, such as running the Recovery Console and using the FIXBOOT command?
You could examine the drive (but do not try to boot from it) by using a notebook drive adatper that matches the type of hard drive you have and will let you connect into another computer.
Here is an example of one:
http://www.amazon.com/Notebook-Hard-.../dp/B000YTR53W
But, we are not sure if you have an IDE drive in the notebook, or not.....
It also matters on the host or desktop computer,whether the system supports IDE drives