<Table> <Tr> <Td> </Td> <Td> This article needs additional citations for verification . Please help improve this article by adding citations to reliable sources . Unsourced material may be challenged and removed . (June 2010) (Learn how and when to remove this template message) </Td> </Tr> </Table> <Tr> <Td> </Td> <Td> This article needs additional citations for verification . Please help improve this article by adding citations to reliable sources . Unsourced material may be challenged and removed . (June 2010) (Learn how and when to remove this template message) </Td> </Tr> <P> Troubleshooting or dépanneuring is a form of problem solving, often applied to repair failed products or processes on a machine or a system . It is a logical, systematic search for the source of a problem in order to solve it, and make the product or process operational again . Troubleshooting is needed to identify the symptoms . Determining the most likely cause is a process of elimination--eliminating potential causes of a problem . Finally, troubleshooting requires confirmation that the solution restores the product or process to its working state . </P> <P> In general, troubleshooting is the identification or diagnosis of "trouble" in the management flow of a corporation or a system caused by a failure of some kind . The problem is initially described as symptoms of malfunction, and troubleshooting is the process of determining and remedying the causes of these symptoms . </P>

Give a short description of how problem isolation is done
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