The machine effectively was dead, this guy was trying to give it a new lease of life before his friend probably would have chucked it so give him a bit of break. He obviously has some idea of computers and a rough idea of what is wrong. Even so called expert and professionals do not know much more than what a computer is made up off and can't properly diagnose which peice of hardware is failing.
To comda.
The bleeps generally are part of the POST which stands for Power On Self Test. What they mean dpeend on the board and maybe LED's on the board. Check the documentation, there is a reason for the 4 letter acronym RTFM.
The other option is to buy a POST card which helps troubleshoot such issues. each work slightly differently and cost about £10 of ebay. From that you should be able to diagnose the issue
Hope this helps,