When an optical drive becomes unavailable and even after replacing the drive there is a power issue then a multimeter must be used in this type of situation.
A multimeter is an instrument that measures the resistance, voltage, and electric current over many ranges. It measures them in volts, ohms, and amps and is generally used by electricians.
The electrical properties are measured by the multimeter and checked for the continuity of the circuit, conductors, and the voltage supplied to the battery.
Therefore, a multimeter will solve the problem.
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