I'm sure it can be saved but the question is... Is it financially responsible to do so? If you cannot get anything from the computer after following the second guide, there are still two options that may bring it to life. 1) Flashing your BIOS, very risky, if not done correctly will kill your motherboard. 2) Motherboard reflow, very smelly job with no guarantee of success.
Depending upon the model of computer you have getting fixed (a little newer than the compaq hopefully), giving it to your brother may be a better option