Computers are usually pretty robust and can last many years without needing attention. But like any other piece of equipment there may come a time when it goes wrong, behaves in an unusual way, or just stops altogether.
We can diagnose any machine to determine what issues have developed and can attempt to repair the machine. If it is beyond repair we can often still recover the data.
Don't throw away a good computer because something has gone wrong - let us try to repair it first!