LifeBuzzN shows us How to Recover Gold from Scrap Computer Parts. This process involves dangerous chemicals so if you attempt it please use caution.
If you have a look at the edges of most computer parts you will see that they are gold plated. In the video memory chip gold fingers are being used but you will find gold fingers on video cards, audio cards and many other parts of your computer equipment. Gold is used to allow for good electrical connections between the card and the motherboard. There is just a thin layer of gold but if you process enough of it you can recover a nice amount of gold. With current prices 100 memory chip fingers produced about $80 worth of gold.
The process requires Muriatic Acid, Hydrogen Peroxide, Urea, Sodium Metabisulfate, Nitric Acid and some Coffee Filters.