When we buy new device such as Sony BX540-BTO we often through away most of the documentation but the warranty.
Very often issues with Sony BX540-BTO begin only after the warranty period ends and you may want to find how to repair it or just do some service work.
Even oftener it is hard to remember what does each function in Laptop Sony BX540-BTO is responsible for and what options to choose for expected result.
Fortunately you can find all manuals for Laptop on our side using links below.